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135 results on '"VANNINI, GIANNI"'

1. Fission induced by nucleons at intermediate energies

Author

Meo, Sergio Lo, Mancusi, Davide, Massimi, Cristian, Vannini, Gianni, and Ventura, Alberto

Subjects
Nuclear Theory
Abstract

Monte Carlo calculations of fission of actinides and pre-actinides induced by protons and neutrons in the energy range from 100 MeV to 1 GeV are carried out by means of a recent version of the Li\`ege Intranuclear Cascade Model, INCL++, coupled with two different evaporation-fission codes, GEMINI++ and ABLA07. In order to reproduce experimental fission cross sections, model parameters are usually adjusted on available (p,f) cross sections and used to predict (n,f) cross sections for the same isotopes., Comment: 36 pages, 18 figures, to appear in Nuclear Physics A

Published
2014
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2. Measurement of the 235U(n,f) cross section relative to the 10B(n,α) reaction with Micromegas detectors at the CERN n_TOF facility: First results

Author

Michalopoulou Veatriki, Diakaki Maria, Vlastou Rosa, Kokkoris Michael, Stamatopoulos Athanasios, Tsinganis Andrea, Eleme Zinovia, Patronis Nikolas, Heyse Jan, Schillebeeckx Peter, Tassan-Got Laurent, Barbagallo Massimo, Colonna Nicola, Urlass Sebastian, Macina Daniela, Chiaveri Enrico, Aberle Oliver, Alcayne Victor, Amaducci Simone, Andrzejewski Józef, Audouin Laurent, Babiano-Suarez Victor, Bacak Michael, Bennett Samuel, Berthoumieux Eric, Billowes Jon, Bosnar Damir, Brown Adam, Busso Maurizio, Caamaño Manuel, Caballero-Ontanaya Luis, Calviño Francisco, Calviani Marco, Cano-Ott Daniel, Casanovas Adria, Cerutti Francesco, Cortés Guillem, Cortés-Giraldo Miguel, Cosentino Luigi, Cristallo Sergio, Damone Lucia-Anna, Davies Paul-John, Dietz Mirco, Domingo-Pardo César, Dressler Rugard, Ducasse Quentin, Dupont Emmeric, Durán Ignacio, Fernández-Domínguez Beatriz, Ferrari Alfredo, Finocchiaro Paolo, Göbel Kathrin, Garg Ruchi, Gawlik-Ramięga Aleksandra, Gilardoni Simone, Gonçalves Isabel, González-Romero Enrique, Guerrero Carlos, Gunsing Frank, Harada Hideo, Heinitz Stephan, Jenkins David, Junghans Arnd, Käppeler† Franz, Kadi Yacine, Kimura Atsushi, Knapová Ingrid, Krtička Milan, Kurtulgil Deniz, Ladarescu Ion, Lederer-Woods Claudia, Leeb Helmut, Lerendegui-Marco Jorge, Lonsdale Sarah-Jane, Manna Alice, Martínez Trinitario, Masi Alessandro, Massimi Cristian, Mastinu Pierfrancesco, Mastromarco Mario, Maugeri Emilio-Andrea, Mazzone Annamaria, Mendoza Emilio, Mengoni Alberto, Milazzo Paolo, Mingrone Federica, Moreno-Soto Javier, Musumarra Agatino, Negret Alexandru, Nolte Ralf, Ogállar Francisco, Oprea Andreea, Pavlik Andreas, Perkowski Jarosław, Piersanti Luciano, Petrone Cristina, Pirovano Elisa, Porras Ignacio, Praena Javier, Quesada José-Manuel, Ramos-Doval Diego, Rauscher Thomas, Reifarth René, Rochman Dimitri, Rubbia Carlo, Sabaté-Gilarte Marta, Saxena Alok, Schumann Dorothea, Sekhar Adhitya, Smith Gavin, Sosnin Nikolay, Sprung Peter, Tagliente Giuseppe, Tain José, Tarifeño-Saldivia Ariel, Thomas Benedikt, Torres-Sánchez Pablo, Ulrich Jiri, Valenta Stanislav, Vannini Gianni, Variale Vincenzo, Vaz Pedro, Ventura Alberto, Vescovi Diego, Vlachoudis Vasilis, Wallner Anton, Woods Philip-John, Wright Tobias, and Žugec Petar

Subjects
Physics, QC1-999
Abstract

Neutron cross section measurements are often made relative to a neutron cross section standard. Thus, the accuracy of the neutron standards determines the best possible accuracy of the neutron measurements. The 235U(n,f) cross section is widely used as reference, while it is considered a standard at thermal point and between 0.15 to 200 MeV. For this reason, additional cross section data for the 235U(n,f) reaction are useful in order to improve the accuracy and to extend the energy range of the standard. In this work, preliminary results of the measurement of the 235U(n,f) cross-section relative to the standard 10B(n,a) reaction are presented. The high accuracy measurement was performed at the experimental area EAR-1 of the n_TOF facility at CERN, aiming at covering the energy range from the thermal region up to approximately 100 keV. The samples were produced at JRC-Geel in Belgium, while the experimental setup was based on Micromegas detectors.

Published
2023
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3. A Thorough Evaluation of GaN HEMT Degradation under Realistic Power Amplifier Operation

Author

Vannini, Gianni Bosi, Antonio Raffo, Valeria Vadalà, Rocco Giofrè, Giovanni Crupi, and Giorgio

Subjects
device degradation, gallium nitride, HEMT, load-pull measurements, microwave frequency, power amplifier, reliability, stress measurements
Abstract

In this paper, we experimentally investigate the effects of degradation observed on 0.15-µm GaN HEMT devices when operating under realistic power amplifier conditions. The latter will be applied to the devices under test (DUT) by exploiting a low-frequency load-pull characterization technique that provides information consistent with RF operation, with the advantage of revealing electrical quantities not directly detectable at high frequency. Quantities such as the resistive gate current, play a fundamental role in the analysis of technology reliability. The experiments will be carried out on DUTs of the same periphery considering two different power amplifier operations: a saturated class-AB condition, that emphasizes the degradation effects produced by high temperatures due to power dissipation, and a class-E condition, that enhances the effects of high electric fields. The experiments will be carried out at 30 °C and 100 °C, and the results will be compared to evaluate how a specific RF condition can impact on the device degradation. Such a kind of comparison, to the authors’ knowledge, has never been carried out and represents the main novelty of the present study.

Published
2023
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4. Measurement of the <math><mrow><mmultiscripts><mi mathvariant='normal'>N</mi><mprescripts/><none/><mn>14</mn></mmultiscripts><mo>(</mo><mi>n</mi><mo>,</mo><mi>p</mi><mo>)</mo><mmultiscripts><mi mathvariant='normal'>C</mi><mprescripts/><none/><mn>14</mn></mmultiscripts></mrow></math> cross section at the CERN n_TOF facility from subthermal energy to 800 keV

Author

Torres-Sánchez, Pablo, Praena, Javier, Porras, Ignacio, Sabaté-Gilarte, Marta, Lederer-Woods, Claudia, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero, Luis, Calviño, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés, Guillem, Cortés-Giraldo, Miguel, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia-Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández-Domínguez, Beatriz, Ferrari, Alfredo, Ferrer, Francisco Javier, Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, Garg, Ruchi, Gawlik-Ramięga, Aleksandra, Geslot, Benoit, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel, González-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Kivel, Niko, Kokkoris, Michael, Kopatch, Yury, Krtička, Milan, Kurtulgil, Deniz, Ladarescu, Ion, Leeb, Helmut, Lerendegui-Marco, Jorge, Meo, Sergio Lo, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martínez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio-Andrea, Mazzone, Annamaria, Mendoza, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Persanti, Luciano, Quesada, José-Manuel, Radeck, Désirée, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Gavin, Sosnin, Nikolay, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, José, Talip, Zeynep, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias, Žugec, Petar, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CEA Cadarache, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and n_TOF

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

International audience; Background: The N14(n,p)C14 reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astrophysics, where N14 acts as a neutron poison in the s process. Several discrepancies remain between the existing data obtained in partial energy ranges: thermal energy, keV region, and resonance region.Purpose: We aim to measure the N14(n,p)C14 cross section from thermal to the resonance region in a single measurement for the first time, including characterization of the first resonances, and provide calculations of Maxwellian averaged cross sections (MACS).Method: We apply the time-of-flight technique at Experimental Area 2 (EAR-2) of the neutron time-of-flight (n_TOF) facility at CERN. B10(n,α)Li7 and U235(n,f) reactions are used as references. Two detection systems are run simultaneously, one on beam and another off beam. Resonances are described with the R-matrix code sammy.Results: The cross section was measured from subthermal energy to 800 keV, resolving the first two resonances (at 492.7 and 644 keV). A thermal cross section was obtained (1.809±0.045 b) that is lower than the two most recent measurements by slightly more than one standard deviation, but in line with the ENDF/B-VIII.0 and JEFF-3.3 evaluations. A 1/v energy dependence of the cross section was confirmed up to tens of keV neutron energy. The low energy tail of the first resonance at 492.7 keV is lower than suggested by evaluated values, while the overall resonance strength agrees with evaluations.Conclusions: Our measurement has allowed determination of the N14(n,p) cross section over a wide energy range for the first time. We have obtained cross sections with high accuracy (2.5%) from subthermal energy to 800 keV and used these data to calculate the MACS for kT=5 to kT=100 keV.

Published
2023
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5. Measurement of the $^{14}$N(n,p)$^{14}$C cross section at the CERN n_TOF facility from sub-thermal energy to 800 keV

Author

Torres-Sánchez, Pablo, Praena, Javier, Porras, Ignacio, Sabaté-Gilarte, Marta, Lederer-Woods, Claudia, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero, Luis, Calviño, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés, Guillem, Cortés-Giraldo, Miguel, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia-Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández-Domínguez, Beatriz, Ferrari, Alfredo, Ferrer, Francisco Javier, Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, Garg, Ruchi, Gawlik-Ramięga, Aleksandra, Geslot, Benoit, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel, González-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Kivel, Niko, Kokkoris, Michael, Kopatch, Yury, Krtička, Milan, Kurtulgil, Deniz, Ladarescu, Ion, Leeb, Helmut, Lerendegui-Marco, Jorge, Meo, Sergio Lo, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martínez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio-Andrea, Mazzone, Annamaria, Mendoza, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Persanti, Luciano, Quesada, José-Manuel, Radeck, Désirée, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Gavin, Sosnin, Nikolay, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, José, Talip, Zeynep, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, PhilipJohn, Woods, Philip John, Wright, Tobias, Žugec, Petar, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CEA Cadarache, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), n_TOF, European Project: 677497,H2020,ERC-2015-STG,DoRES(2016), HEP, INSPIRE, and Direct measurements of key nuclear Reactions for the creation of Elements in Stars - DoRES - - H20202016-06-01 - 2021-05-31 - 677497 - VALID

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], FOS: Physical sciences, Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), nucl-ex, Nuclear Experiment
Abstract

Background: The $^{14}$N(n,p)$^{14}$C reaction is of interest in neutron capture therapy, where nitrogen-related dose is the main component due to low-energy neutrons, and in astrophysics, where 14N acts as a neutron poison in the s-process. Several discrepancies remain between the existing data obtained in partial energy ranges: thermal energy, keV region and resonance region. Purpose: Measuring the 14N(n,p)14C cross section from thermal to the resonance region in a single measurement for the first time, including characterization of the first resonances, and providing calculations of Maxwellian averaged cross sections (MACS). Method: Time-of-flight technique. Experimental Area 2 (EAR-2) of the neutron time-of-flight (n_TOF) facility at CERN. $^{10}$B(n,${\alpha}$)$^7$Li and $^{235}$U(n,f) reactions as references. Two detection systems running simultaneously, one on-beam and another off-beam. Description of the resonances with the R-matrix code sammy. Results: The cross section has been measured from sub-thermal energy to 800 keV resolving the two first resonances (at 492.7 and 644 keV). A thermal cross-section (1.809$\pm$0.045 b) lower than the two most recent measurements by slightly more than one standard deviation, but in line with the ENDF/B-VIII.0 and JEFF-3.3 evaluations has been obtained. A 1/v energy dependence of the cross section has been confirmed up to tens of keV neutron energy. The low energy tail of the first resonance at 492.7 keV is lower than suggested by evaluated values, while the overall resonance strength agrees with evaluations. Conclusions: Our measurement has allowed to determine the $^{14}$N(n,p) cross-section over a wide energy range for the first time. We have obtained cross-sections with high accuracy (2.5 %) from sub-thermal energy to 800 keV and used these data to calculate the MACS for kT = 5 to kT = 100 keV., Comment: 18 pages, 15 figures, 4 tables

Published
2022
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6. Destruction of the cosmic γ-ray emitter 26Al in massive stars: study of the key 26Al(n,p) reaction

Author

Lederer-Woods, Claudia, Woods, Philip John, Davinson, Thomas, Kahl, David, Lonsdale, Sarah Jane, Aberle, Oliver, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Bacak, Michael, Balibrea-Correa, Javier, Barbagallo, Massimo, Bečvář, František, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Caamaño, Manuel, Calviño, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas, Adria, Cerutti, Francesco, Chen, Y. H., Chiaveri, Enrico, Colonna, Nicola, Cortés, Guillem, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Domingo-Pardo, Cesar, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández-Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Paulo, Ferrer, Francesc J., Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, García, Aczel Regino, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel F., González-Romero, Enrique, Griesmayer, Erich, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David G., Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kalamara, Antigoni, Kavrigin, Pavel, Kimura, Atsushi, Kivel, Nikolai, Kokkoris, Michael, Krtička, Milan, Kurtulgil, Deniz, Leal-Cidoncha, E., Leeb, Helmut, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Macina, Daniela, Manna, Alice, Marganiec, Justyna, Martínez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio-Andrea, Mazzone, Annamaria, Mendoza, Emilio, Mengoni, Alberto, Milazzo, Paolo M., Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Porras, Ignacio, Praena, Javier, Quesada, José-Manuel, Radeck, Desiree, Rauscher, Thomas, Reifarth, René, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair G., Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, José L., Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stuart, Weß, Christina, Wright, Tobias, Žugec, Petar, and n_TOF Collaboration

Subjects
ddc:530
Abstract

The 26Al(n,p)26Mg reaction is the key reaction impacting on the abundances of the cosmic γ-ray emitter 26Al produced in massive stars and impacts on the potential pollution of the early solar system with 26Al by asymptotic giant branch stars. We performed a measurement of the 26Al(n,p)26Mg cross section at the high-flux beam line EAR-2 at the n_TOF facility (CERN). We report resonance strengths for eleven resonances, nine being measured for the first time, while there is only one previous measurement for the other two. Our resonance strengths are significantly lower than the only previous values available. Our cross-section data range to 150 keV neutron energy, which is sufficient for a reliable determination of astrophysical reactivities up to 0.5 GK stellar temperature.

Published
2021

7. First results of the 140Ce(n,γ)141Ce cross-section measurement at n_TOF

Author

n_TOF Collaboration, Amaducci, Simone, Colonna, Nicola, Cosentino, Luigi, Cristallo, Sergio, Finocchiaro, Paolo, Krtička, Milan, Massimi, Cristian, Mastromarco, Mario, Mazzone, Annamaria, Mengoni, Alberto, Valenta, Stanislav, Aberle, Oliver, Alcayne, Victor, Andrzejewski, Józef, Audouin, Laurent, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero-Ontanaya, Luis, Calviño, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chiaveri, Enrico, Cortés, Guillem, Cortés-Giraldo, Miguel, Damone, Lucia-Anna, Davies, Paul-John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, Cesar, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández-Domínguez, Beatriz, Ferrari, Alfredo, Furman, Valter, Göbel, Kathrin, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Gonçalves, Isabel, González-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Junghans, Arnd, Käppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Knapova, Ingrid, Kokkoris, Michael, Kopatch, Yuri, Kurtulgil, Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martínez, Trinitario, Masi, Alessandro, Mastinu, Pierfrancesco, Maugeri, Emilio-Andrea, Mendoza, Emilio, Michalopoulou, Veatriki, Milazzo, Paolo, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Petrone, Cristina, Pirovano, Elisa, Porras, Ignacio, Praena, Javier, Quesada, José-Manuel, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Gavin, Sosnin, Nikolay, Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, José, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, PhilipJohn, Wright, Tobias, Žugec, Petar, n_TOF Collaboration, Universidade de Santiago de Compostela. Departamento de Física de Partículas, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, n_TOF, ITA, FRA, DEU, ESP, GRC, Amaducci S., Colonna N., Cosentino L., Cristallo S., Finocchiaro P., Krticka M., Massimi C., Mastromarco M., Mazzone A., Mengoni A., Valenta S., Aberle O., Alcayne V., Andrzejewski J., Audouin L., Babiano-Suarez V., Bacak M., Barbagallo M., Bennett S., Berthoumieux E., Billowes J., Bosnar D., Brown A., Busso M., Caamano M., Caballero-Ontanaya L., Calvino F., Calviani M., Cano-Ott D., Casanovas A., Cerutti F., Chiaveri E., Cortes G., Cortes-Giraldo M., Damone L.-A., Davies P.-J., Diakaki M., Dietz M., Domingo-Pardo C., Dressler R., Ducasse Q., Dupont E., Duran I., Eleme Z., Fernandez-Dominguez B., Ferrari A., Furman V., Gobel K., Garg R., Gawlik A., Gilardoni S., Goncalves I., Gonzalez-Romero E., Guerrero C., Gunsing F., Harada H., Heinitz S., Heyse J., Jenkins D., Junghans A., Kappeler F., Kadi Y., Kimura A., Knapova I., Kokkoris M., Kopatch Y., Kurtulgil D., Ladarescu I., Lederer-Woods C., Leeb H., Lerendegui-Marco J., Lonsdale S.-J., Macina D., Manna A., Martinez T., Masi A., Mastinu P., Maugeri E.-A., Mendoza E., Michalopoulou V., Milazzo P., Mingrone F., Moreno-Soto J., Musumarra A., Negret A., Ogallar F., Oprea A., Patronis N., Pavlik A., Perkowski J., Piersanti L., Petrone C., Pirovano E., Porras I., Praena J., Quesada J.-M., Ramos-Doval D., Rauscher T., Reifarth R., Rochman D., Rubbia C., Sabate-Gilarte M., Saxena A., Schillebeeckx P., Schumann D., Sekhar A., Smith G., Sosnin N., Sprung P., Stamatopoulos A., Tagliente G., Tain J., Tarifeno-Saldivia A., Tassan-Got L., Thomas B., Torres-Sanchez P., Tsinganis A., Ulrich J., Urlass S., Vannini G., Variale V., Vaz P., Ventura A., Vescovi D., Vlachoudis V., Vlastou R., Wallner A., Woods P.J., Wright T., Zugec P., and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
cross-section, Cerium oxide, Capture, General Physics and Astronomy, QC793-793.5, 7. Clean energy, 01 natural sciences, Ce, chemistry.chemical_compound, neutron, $^{140}$Ce, n_TOF, 010303 astronomy & astrophysics, Physics, Deuterated benzene, Elementary particle physics, nucleosynthesis, Cerium, cerium, Cosmic electrodynamics, Atomic physics, Nucleosynthesis, neutron capture, Cross-section, chemistry.chemical_element, Neutron, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 0103 physical sciences, Nuclear Physics - Experiment, ddc:530, 010306 general physics, capture, Nucleosynthesi, Ones electromagnètiques, Física [Àrees temàtiques de la UPC], Electromagnetic waves, Nuclear data, 140Ce, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, chemistry, 13. Climate action, s-process, MACS, Electrodinàmica còsmica
Abstract

The cerium oxide material for this measurement was provided by T. Katabuchi of the Tokyo Institute of Technology., An accurate measurement of the 140Ce(n,g) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the 140Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in 140Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the 140Ce Maxwellian-averaged cross-section.

Published
2021
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8. Monte Carlo calculations of nucleon-induced fission in the GeV energy range

Author

Meo Sergio Lo, Mancusi Davide, Massimi Cristian, Tarrio Diego, Vannini Gianni, and Ventura Alberto

Subjects
Physics, QC1-999
Abstract

In the present work the Monte Carlo calculations of nucleon-induced fission on actinides and pre-actinides from 100 MeV to 1 GeV, described in a recent paper of ours [1], are extended up to an incident energy of 8 GeV. The calculated (p,f) cross sections are compared with the few experimental data available in the literature. The same model parameters are used to predict (n,f) cross sections in the same energy range. Possible shortcomings of decay models at high incident energies are discussed.

Published
2017
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9. First Results of the Ce-140(n,gamma)Ce-141 Cross-Section Measurement at n_TOF

Author

Amaducci, Simone, Colonna, Nicola, Cosentino, Luigi, Cristallo, Sergio, Finocchiaro, Paolo, Massimi, Cristian, Mastromarco, Mario, Mazzone, Annamaria, Mengoni, Alberto, Valenta, Stanislav, Aberle, Oliver, Alcayne, Victor, Andrzejewski, Jozef, Audouin, Laurent, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamano, Manuel, Caballero-Ontanaya, Luis, Calvino, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chiaveri, Enrico, Cortes, Guillem, Cortes-Giraldo, Miguel, Damone, Lucia-Anna, Davies, Paul-John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, Cesar, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Duran, Ignacio, Eleme, Zinovia, Fernandez-Dominguez, Beatriz, Ferrari, Alfredo, Furman, Valter, Goebel, Kathrin, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Goncalves, Isabel, Gonzalez-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Junghans, Arnd, Kaeppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Knapova, Ingrid, Kokkoris, Michael, Kopatch, Yuri, Kurtulgil, Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martinez, Trinitario, Masi, Alessandro, Mastinu, Pierfrancesco, Maugeri, Emilio-Andrea, Mendoza, Emilio, Michalopoulou, Veatriki, Milazzo, Paolo, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogallar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Piersanti, Luciano, Petrone, Cristina, Pirovano, Elisa, Porras, Ignacio, Praena, Javier, Quesada, Jose-Manuel, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, Rene, Rochman, Dimitri, Rubbia, Carlo, Sabate-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Gavin, Sosnin, Nikolay, Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, Jose, Tarifeno-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sanchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, PhilipJohn, Wright, Tobias, and Zugec, Petar

Abstract

An accurate measurement of the Ce-140(n,gamma) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the Ce-140 capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in Ce-140 to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the Ce-140 Maxwellian-averaged cross-section.

Published
2021
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10. First Results of the 140Ce(n,γ)141Ce Cross-Section Measurement at n_TOF

Author

Amaducci, Simone, primary, Colonna, Nicola, additional, Cosentino, Luigi, additional, Cristallo, Sergio, additional, Finocchiaro, Paolo, additional, Krtička, Milan, additional, Massimi, Cristian, additional, Mastromarco, Mario, additional, Mazzone, Annamaria, additional, Mengoni, Alberto, additional, Valenta, Stanislav, additional, Aberle, Oliver, additional, Alcayne, Victor, additional, Andrzejewski, Józef, additional, Audouin, Laurent, additional, Babiano-Suarez, Victor, additional, Bacak, Michael, additional, Barbagallo, Massimo, additional, Bennett, Samuel, additional, Berthoumieux, Eric, additional, Billowes, Jon, additional, Bosnar, Damir, additional, Brown, Adam, additional, Busso, Maurizio, additional, Caamaño, Manuel, additional, Caballero-Ontanaya, Luis, additional, Calviño, Francisco, additional, Calviani, Marco, additional, Cano-Ott, Daniel, additional, Casanovas, Adria, additional, Cerutti, Francesco, additional, Chiaveri, Enrico, additional, Cortés, Guillem, additional, Cortés-Giraldo, Miguel, additional, Damone, Lucia-Anna, additional, Davies, Paul-John, additional, Diakaki, Maria, additional, Dietz, Mirco, additional, Domingo-Pardo, Cesar, additional, Dressler, Rugard, additional, Ducasse, Quentin, additional, Dupont, Emmeric, additional, Durán, Ignacio, additional, Eleme, Zinovia, additional, Fernández-Domínguez, Beatriz, additional, Ferrari, Alfredo, additional, Furman, Valter, additional, Göbel, Kathrin, additional, Garg, Ruchi, additional, Gawlik, Aleksandra, additional, Gilardoni, Simone, additional, Gonçalves, Isabel, additional, González-Romero, Enrique, additional, Guerrero, Carlos, additional, Gunsing, Frank, additional, Harada, Hideo, additional, Heinitz, Stephan, additional, Heyse, Jan, additional, Jenkins, David, additional, Junghans, Arnd, additional, Käppeler, Franz, additional, Kadi, Yacine, additional, Kimura, Atsushi, additional, Knapova, Ingrid, additional, Kokkoris, Michael, additional, Kopatch, Yuri, additional, Kurtulgil, Deniz, additional, Ladarescu, Ion, additional, Lederer-Woods, Claudia, additional, Leeb, Helmut, additional, Lerendegui-Marco, Jorge, additional, Lonsdale, Sarah-Jane, additional, Macina, Daniela, additional, Manna, Alice, additional, Martínez, Trinitario, additional, Masi, Alessandro, additional, Mastinu, Pierfrancesco, additional, Maugeri, Emilio-Andrea, additional, Mendoza, Emilio, additional, Michalopoulou, Veatriki, additional, Milazzo, Paolo, additional, Mingrone, Federica, additional, Moreno-Soto, Javier, additional, Musumarra, Agatino, additional, Negret, Alexandru, additional, Ogállar, Francisco, additional, Oprea, Andreea, additional, Patronis, Nikolas, additional, Pavlik, Andreas, additional, Perkowski, Jarosław, additional, Piersanti, Luciano, additional, Petrone, Cristina, additional, Pirovano, Elisa, additional, Porras, Ignacio, additional, Praena, Javier, additional, Quesada, José-Manuel, additional, Ramos-Doval, Diego, additional, Rauscher, Thomas, additional, Reifarth, René, additional, Rochman, Dimitri, additional, Rubbia, Carlo, additional, Sabaté-Gilarte, Marta, additional, Saxena, Alok, additional, Schillebeeckx, Peter, additional, Schumann, Dorothea, additional, Sekhar, Adhitya, additional, Smith, Gavin, additional, Sosnin, Nikolay, additional, Sprung, Peter, additional, Stamatopoulos, Athanasios, additional, Tagliente, Giuseppe, additional, Tain, José, additional, Tarifeño-Saldivia, Ariel, additional, Tassan-Got, Laurent, additional, Thomas, Benedikt, additional, Torres-Sánchez, Pablo, additional, Tsinganis, Andrea, additional, Ulrich, Jiri, additional, Urlass, Sebastian, additional, Vannini, Gianni, additional, Variale, Vincenzo, additional, Vaz, Pedro, additional, Ventura, Alberto, additional, Vescovi, Diego, additional, Vlachoudis, Vasilis, additional, Vlastou, Rosa, additional, Wallner, Anton, additional, Woods, PhilipJohn, additional, Wright, Tobias, additional, and Žugec, Petar, additional

Published
2021
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11. Measurement of the energy-differential cross-section of the 12C(n,p)12B and 12C(n,d)11B reactions at the n_TOF facility at CERN

Author

International Conference on Nuclear Data for Science and Technology (2019 : Peking), Barbagallo, Massimo, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté- Gilarte, M., Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2019 : Peking), Barbagallo, Massimo, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté- Gilarte, M., Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., and Žugec, Petar

Abstract

Although the 12C(n,p)12B and 12C(n,d)11B reactions are of interest in several fields of basic and applied Nuclear Physics the present knowledge of these two cross-sections is far from being accurate and reliable, with both evaluations and data showing sizable discrepancies. As part of the challenging n_TOF program on (n,cp) nuclear reactions study, the energy differential cross-sections of the 12C(n,p)12B and 12C(n,d)11 B reactions have been measured at CERN from the reaction thresholds up to 30 MeV neutron energy. Both measurements have been recently performed at the long flight-path (185 m) experimental area of the n_TOF facility at CERN using a pure (99.95%) rigid graphite target and two silicon telescopes. In this paper an overview of the experiment is presented together with a few preliminary results.

Published
2020

12. Measurement of the 244Cm capture cross sections at both CERN n_TOF experimental areas

Author

International Conference on Nuclear Data for Science and Technology (2019 : Peking), Alcayne, Victor, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Kimura, Atsushi, Aberle, Oliver, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Kivel, Nikolay, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Talip, Zeynep, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Torres-Sánchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2019 : Peking), Alcayne, Victor, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Kimura, Atsushi, Aberle, Oliver, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Kivel, Nikolay, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Talip, Zeynep, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Torres-Sánchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., and Žugec, Petar

Abstract

Accurate neutron capture cross section data for minor actinides (MAs) are required to estimate the production and transmutation rates of MAs in light water reactors with a high burnup, critical fast reactors like Gen-IV systems and other innovative reactor systems such as accelerator driven systems (ADS). Capture reactions of 244Cm open the path for the formation of heavier Cm isotopes and of heavier elements such as Bk and Cf. In addition, 244Cm shares nearly 50% of the total actinide decay heat in irradiated reactor fuels with a high burnup, even after three years of cooling. Experimental data for this isotope are very scarce due to the difficulties of providing isotopically enriched samples and because the high intrinsic activity of the samples requires the use of neutron facilities with high instantaneous flux. The only two previous experimental data sets for this neutron capture cross section have been obtained in 1969 using a nuclear explosion and, more recently, at J-PARC in 2010. The neutron capture cross sections have been measured at n_TOF with the same samples that the previous experiments in J-PARC. The samples were measured at n_TOF Experimental Area 2 (EAR-2) with three C6D6 detectors and also in Experimental Area 1 (EAR-1) with the Total Absorption Calorimeter (TAC). Preliminary results assessing the quality and limitations of these new experimental datasets are presented for the experiments in both areas. Preliminary yields of both measurements will be compared with evaluated libraries for the first time.

Published
2020

13. Setup for the measurement of the 235U(n,f) cross section relative to n-p scattering up to 1 GeV

Author

International Conference on Nuclear Data for Science and Technology (2019 : Peking), Manna, Alice, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeno-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2019 : Peking), Manna, Alice, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeno-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., and Žugec, Petar

Abstract

The neutron induced fission of 235U is extensively used as a reference for neutron fluence measurements in various applications, ranging from the investigation of the biological effectiveness of high energy neutrons, to the measurement of high energy neutron cross sections of relevance for accelerator driven nuclear systems. Despite its widespread use, no data exist on neutron induced fission of 235U above 200 MeV. The neutron facility n_TOF offers the possibility to improve the situation. The measurement of 235U(n,f) relative to the differential n-p scattering cross-section, was carried out in September 2018 with the aim of providing accurate and precise cross section data in the energy range from 10 MeV up to 1 GeV. In such measurements, Recoil Proton Telescopes (RPTs) are used to measure the neutron flux while the fission events are detected and counted with dedicated detectors. In this paper the measurement campaign and the experimental set-up are illustrated.

Published
2020

14. Study of the neutron-induced fission cross section of 237Np at CERN’s n_TOF facility over a wide energy range

Author

International Conference on Nuclear Data for Science and Technology (2019 : Peking), Stamatopoulos, Athanasios, Tsinganis, Andrea, Diakaki, Maria, Colonna, Nicola, Kokkoris, Michael, Vlastou, Rosa, Kalamara, Antigoni, Schillebeeckx, Peter, Tassan-Got, Laurent, Žugec, Petar, Sabaté-Gilarte, Marta, Patronis, Nikolas, Eleme, Zinovia, Heyse, Jan, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Bečvář, František, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Damone, Lucia Anna, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kavrigin, Pavel, Kimura, Atsushi, Kivel, Nikolay, Knapová, Ingrid, Krtička, Milan, Kurtulgil, Cem Deniz, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Macina, Daniela, Manna, Alice, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Oprea, Andreea, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rauscher, Thomas, Reifarth, René, Rubbia, Carlo, Ryan, James A., Saxena, Alok, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Wallner, Anton, Warren, Stephen J., Weiß, Christina, Woods, Philip John, Wright, Tobias, International Conference on Nuclear Data for Science and Technology (2019 : Peking), Stamatopoulos, Athanasios, Tsinganis, Andrea, Diakaki, Maria, Colonna, Nicola, Kokkoris, Michael, Vlastou, Rosa, Kalamara, Antigoni, Schillebeeckx, Peter, Tassan-Got, Laurent, Žugec, Petar, Sabaté-Gilarte, Marta, Patronis, Nikolas, Eleme, Zinovia, Heyse, Jan, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Bečvář, František, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Damone, Lucia Anna, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kavrigin, Pavel, Kimura, Atsushi, Kivel, Nikolay, Knapová, Ingrid, Krtička, Milan, Kurtulgil, Cem Deniz, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Macina, Daniela, Manna, Alice, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Oprea, Andreea, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rauscher, Thomas, Reifarth, René, Rubbia, Carlo, Ryan, James A., Saxena, Alok, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Wallner, Anton, Warren, Stephen J., Weiß, Christina, Woods, Philip John, and Wright, Tobias

Abstract

Neutron-induced fission cross sections of isotopes involved in the nuclear fuel cycle are vital for the design and safe operation of advanced nuclear systems. Such experimental data can also provide additional constraints for the adjustment of nuclear model parameters used in the evaluation process, resulting in the further development of fission models. In the present work, the 237Np(n,f) cross section was studied at the EAR2 vertical beam-line at CERN's n_TOF facility, over a wide range of neutron energies, from meV to MeV, using the time-of-flight technique and a set-up based on Micromegas detectors, in an attempt to provide accurate experimental data. Preliminary results in the 200 keV – 14 MeV neutron energy range as well as the experimental procedure, including a description of the facility and the data handling and analysis, will be presented.

Published
2020

15. Status and perspectives of the neutron time-of-flight facility n_TOF at CERN

Author

International Conference on Nuclear Data for Science and Technology (2019 : Peking), Chiaveri, Enrico, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2019 : Peking), Chiaveri, Enrico, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., and Žugec, Petar

Abstract

Since the start of its operation in 2001, based on an idea of Prof. Carlo Rubbia [1], the neutron time of-flight facility of CERN, n_TOF, has become one of the most forefront neutron facilities in the world for wide-energy spectrum neutron cross section measurements. Thanks to the combination of excellent neutron energy resolution and high instantaneous neutron flux available in the two experimental areas, the second of which has been constructed in 2014, n_TOF is providing a wealth of new data on neutron-induced reactions of interest for nuclear astrophysics, advanced nuclear technologies and medical applications. The unique features of the facility will continue to be exploited in the future, to perform challenging new measurements addressing the still open issues and long-standing quests in the field of neutron physics. In this document the main characteristics of the n_TOF facility and their relevance for neutron studies in the different areas of research will be outlined, addressing the possible future contribution of n_TOF in the fields of nuclear astrophysics, nuclear technologies and medical applications. In addition, the future perspectives of the facility will be described including the upgrade of the spallation target, the setup of an imaging installation and the construction of a new irradiation area.

Published
2020

16. Fission program at n_TOF

Author

International Workshop on Nuclear Data Evaluation for Reactor Applications (5. : 2018 : Aix-en-Provence), Tassan-Got, Laurent, Colonna, Nicola, Diakaki, Maria, Eleme, Zinovia, Manna, Alice, Sekhar, Adhitya, Stamatopoulos, Athanasios, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Martinez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., Žugec, Petar, International Workshop on Nuclear Data Evaluation for Reactor Applications (5. : 2018 : Aix-en-Provence), Tassan-Got, Laurent, Colonna, Nicola, Diakaki, Maria, Eleme, Zinovia, Manna, Alice, Sekhar, Adhitya, Stamatopoulos, Athanasios, Aberle, Oliver, Alcayne, Victor, Amaducci, Simone, Andrzejewski, Józef, Audouin, Laurent, Babiano Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Bosnar, Damir, Brown, Adam S., Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Casanovas Hoste, Adrià, Cerutti, Francesco, Chiaveri, Enrico, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Davies, Paul John, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Gonçalves, Isabel Maria Ferro, Finocchiaro, Paolo, Furman, Valter, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Göbel, Kathrin, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jiri, U., Junghans, Arnd Rudolf, Kadi, Yacine, Käppeler, Franz, Kimura, Atsushi, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Martinez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Millán Callado, María de los Ángeles, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Petrone, Cristina, Piersanti, Luciano, Pirovano, Elisa, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Ramos Doval, Diego, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Smith, Alastair Gavin, Sosnin, Nikolay V., Sprung, Peter, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias J., and Žugec, Petar

Abstract

Since its start in 2001 the n_TOF collaboration developed a measurement program on fission, in view of advanced fuels in new generation reactors. A special effort was made on measurement of cross sections of actinides, exploiting the peculiarity of the n_TOF neutron beam which spans a huge energy domain, from the thermal region up to GeV. Moreover fission fragment angular distributions have also been measured. An overview of the cross section results achieved with different detectors is presented, including a discussion of the 237Np case where discrepancies showed up between different detector systems. The results on the anisotropy of the fission fragments and its implication on the mechanism of neutron absorption, and in applications, are also shown.

Published
2019

17. Measurement of the 244Cm and 246Cm neutron-induced capture cross sections at the n_TOF facility

Author

International Workshop on Nuclear Data Evaluation for Reactor Applications (5. : 2018 : Aix-en-Provence), Alcayne, Victor, Kimura, Atsushi, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Martı́nez, Trinitario, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Barbagallo, Massimo, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviño Tavares, Francisco, Calviani, Marco, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kivel, Nikolay, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Macina, Daniela, Manna, Alice, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Ramos Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Simone, S., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Talip, T., Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Ulrich, Jiri, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias, Žugec, Petar, International Workshop on Nuclear Data Evaluation for Reactor Applications (5. : 2018 : Aix-en-Provence), Alcayne, Victor, Kimura, Atsushi, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Martı́nez, Trinitario, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Barbagallo, Massimo, Bečvář, František, Bellia, Giorgio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero Ontanaya, Luis, Calviño Tavares, Francisco, Calviani, Marco, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kivel, Nikolay, Knapová, Ingrid, Kokkoris, Michael, Kopatch, Yuri N., Krtička, Milan, Kurtulgil, Cem Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Lerendegui-Marco, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Macina, Daniela, Manna, Alice, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mengoni, Alberto, Michalopoulou, Veatriki, Milazzo, Paolo Maria, Mingrone, Federica, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Ogállar Ruiz, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Ramos Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Simone, S., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Talip, T., Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Ulrich, Jiri, Urlaß, Sebastian, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, Philip John, Wright, Tobias, and Žugec, Petar

Abstract

The neutron capture reactions of the 244Cm and 246Cm isotopes open the path for the formation of heavier Cm isotopes and heavier elements such as Bk and Cf in a nuclear reactor. In addition, both isotopes belong to the minor actinides with a large contribution to the decay heat and to the neutron emission in irradiated fuels. There are only two previous 244Cm and 246Cm capture cross section measurements: one in 1969 using a nuclear explosion [1] and the most recent data measured at J-PARC in 2010 [2]. The data for both isotopes are very scarce due to the difficulties in performing the measurements: high intrinsic activity of the samples and limited facilities capable of providing isotopically enriched samples. We have measured both neutron capture cross sections at the n_TOF Experimental Area 2 (EAR-2) with three C6 D6 detectors and also at Area 1 (EAR-1) with the TAC. Preliminary results assessing the quality and limitations (back-ground subtraction, measurement technique and counting statistics) of this new experimental datasets are presented and discussed.

Published
2019

18. Measurement of the 70Ge(n,¿) cross section up to 300 keV at the CERN n_TOF facility

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Lederer-Woods, C., Andrzejewski, Józef, Battino, U., Gunsing, Frank, Krticka, M., Massimi, Cristian, Mingrone, Federica, Aberle, O., Audouin, Ludmila, Bacak, M., Barbagallo, Massimo, Beinrucker, C., Berthoumieux, Eric, Bosnar, Damir, Brugger, Matthias, Calviño Tavares, Francisco, Chen, Yu-Hsiang, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Diakaki, M., Domingo Pardo, César, Dressler, Rugard, Dupont, E., Gonzalez Romero, E., Goverdovski, A., Griesmayer, E., Jericha, E., Kaeppeler, F., Kadi, Y, Ketlerov, V., Kimura, Atsushi, Leal-Cidoncha, E., Leeb, H., Lerendegui-Marco, J., Losito, R., Marganiec, J., Mastromarco, M., Musumarra, A., Patronis, N., Pavlik, A., Rauscher, Thomas, Rubbia, C., Sabaté-Gilarte, M., Saxena, Avadh, Schmidt, Samuel, Stamatopoulos, A., Tassan-Got, L., Vannini, Gianni, Vlachoudis, V., Wallner, A., Wright, T., Žugec, Petar, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Lederer-Woods, C., Andrzejewski, Józef, Battino, U., Gunsing, Frank, Krticka, M., Massimi, Cristian, Mingrone, Federica, Aberle, O., Audouin, Ludmila, Bacak, M., Barbagallo, Massimo, Beinrucker, C., Berthoumieux, Eric, Bosnar, Damir, Brugger, Matthias, Calviño Tavares, Francisco, Chen, Yu-Hsiang, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Diakaki, M., Domingo Pardo, César, Dressler, Rugard, Dupont, E., Gonzalez Romero, E., Goverdovski, A., Griesmayer, E., Jericha, E., Kaeppeler, F., Kadi, Y, Ketlerov, V., Kimura, Atsushi, Leal-Cidoncha, E., Leeb, H., Lerendegui-Marco, J., Losito, R., Marganiec, J., Mastromarco, M., Musumarra, A., Patronis, N., Pavlik, A., Rauscher, Thomas, Rubbia, C., Sabaté-Gilarte, M., Saxena, Avadh, Schmidt, Samuel, Stamatopoulos, A., Tassan-Got, L., Vannini, Gianni, Vlachoudis, V., Wallner, A., Wright, T., and Žugec, Petar

Abstract

Neutron capture data on intermediate mass nuclei are of key importance to nucleosynthesis in the weakcomponent of the slow neutron capture processes, which occurs in massive stars. The (n,¿) cross section on70Ge, which is mainly produced in thesprocess, was measured at the neutron time-of-flight facility n_TOF atCERN. Resonance capture kernels were determined up to 40 keV neutron energy and average cross sectionsup to 300 keV. Stellar cross sections were calculated fromkT=5keVtokT=100 keV and are in verygood agreement with a previous measurement by Walter and Beer (1985) and recent evaluations. Average crosssections are in agreement with Walter and Beer (1985) over most of the neutron energy range covered, while theyare systematically smaller for neutron energies above 150 keV. We have calculated isotopic abundances producedins-process environments in a 25 solar mass star for two initial metallicities (below solar and close to solar).While the low metallicity model reproduces best the solar system germanium isotopic abundances, the close tosolar model shows a good global match to solar system abundances in the range of mass numbersA=60–80, Postprint (published version)

Published
2019

19. Neutron capture cross section measurement of U 238 at the CERN n-TOF facility in the energy region from 1 eV to 700 keV

Author

Mingrone, F., Massimi, C., Vannini, Gianni, Colonna, Nicola, Gunsing, Frank, Žugec, P., Altstadt, Sebastian G., Andrzejewski, J., Audouin, Laurent, Cortés Giraldo, Miguel Antonio, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear Experiment
Abstract

The aim of this work is to provide a precise and accurate measurement of the 238U(n,γ ) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n,γ ) measurements performed at the n_TOF CERN facility are presented in this work. The γ -ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.

Published
2017

20. Neutron capture cross section measurement of U238 at the CERN n_TOF facility in the energy region from 1 eV to 700 keV

Author

MINGRONE, FEDERICA, MASSIMI, CRISTIAN, VANNINI, GIANNI, LO MEO, SERGIO, Colonna, N., Gunsing, F., Žugec, P., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés Giraldo, M. A., Diakaki, M., Domingo Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A. R., Giubrone, G., Gonçalves, I. F., González Romero, E., Griesmayer, E., Guerrero, C., Hernández Prieto, A., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal Cidoncha, E., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P. F., Mastromarco, M., Mendoza, E., Mengoni, A., Milazzo, P. M., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego, A., Robles, M. S., Rubbia, C., Sabaté Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J. L., Tarrío, D., Tassan Got, L., Tsinganis, A., Valenta, S., Variale, V., Vaz, P., Ventura, A., Vermeulen, M. J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T., Mingrone, F., Massimi, C., Vannini, G., Colonna, N., Gunsing, F., Žugec, P., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M. A., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A. R., Giubrone, G., Gonçalves, I. F., González-Romero, E., Griesmayer, E., Guerrero, C., Hernández-Prieto, A., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L. S., Lo Meo, S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P. F., Mastromarco, M., Mendoza, E., Mengoni, A., Milazzo, P. M., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego, A., Robles, M. S., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J. L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Variale, V., Vaz, P., Ventura, A., Vermeulen, M. J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., and Wright, T.

Subjects
238U, resonance reaction, time of flight, nuclear technology, n_TOF, Nuclear Experiment
Abstract

The aim of this work is to provide a precise and accurate measurement of the 238U(n,γ) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238 U(n,γ ) measurements performed at the n_TOF CERN facility are presented in this work. The γ-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.

Published
2017

21. Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV

Author

Mingrone, Federica, Massimi, Cristian, Vannini, Gianni, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Universitat Politècnica de Catalunya. Departament de Física, and Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group

Subjects
Neutrons, Energies::Energia nuclear [Àrees temàtiques de la UPC], nTOF, Cross section, Reaction, CERN, Energia nuclear, Nuclear energy, Nuclear, Neutron, Nuclear Experiment
Abstract

The aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n, gamma) measurements performed at the n_TOF CERN facility are presented in this work. The gamma-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher.

Published
2017

22. The CERN n_TOF facility: a unique tool for nuclear data measurement

Author

Cortés Giraldo, Miguel Antonio, Guerrero Sánchez, Carlos, Lerendegui Marco, Jorge, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, Vannini, Gianni, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

CNR*15 - 5th International Workshop on Compound-Nuclear Reactions and Related Topics The study of the resonant structures in neutron-nucleus cross-sections, and therefore of the compound-nucleus reaction mechanism, requires spectroscopic measurements to determine with high accuracy the energy of the neutron interacting with the material under study. To this purpose, the neutron time-of-flight facility n_TOF has been operating since 2001 at CERN. Its characteristics, such as the high intensity instantaneous neutron flux, the wide energy range from thermal to few GeV, and the very good energy resolution, are perfectly suited to perform high-quality measurements of neutron-induced reaction cross sections. The precise and accurate knowledge of these cross sections plays a fundamental role in nuclear technologies, nuclear astrophysics and nuclear physics. Two different measuring stations are available at the n_TOF facility, called EAR1 and EAR2, with different characteristics of intensity of the neutron flux and energy resolution. These experimental areas, combined with advanced detection systems lead to a great flexibility in performing challenging measurement of high precision and accuracy, and allow the investigation isotopes with very low cross sections, or available only in small quantities, or with very high specific activity. The characteristics and performances of the two experimental areas of the n_TOF facility will be presented, together with the most important measurements performed to date and their physics case. In addition, the significant upcoming measurements will be introduced

Published
2016

23. Monte Carlo calculations of nucleon-induced fission in the GeV energy range

Author

Meo, Sergio Lo, Mancusi, Davide, Massimi, Cristian, Tarrio, Diego, Vannini, Gianni, Ventura, Alberto, Meo, Sergio Lo, Mancusi, Davide, Massimi, Cristian, Tarrio, Diego, Vannini, Gianni, and Ventura, Alberto

Abstract

In the present work the Monte Carlo calculations of nucleon-induced fission on actinides and pre-actinides from 100 MeV to 1 GeV, described in a recent paper of ours [1], are extended up to an incident energy of 8 GeV. The calculated (p,f) cross sections are compared with the few experimental data available in the literature. The same model parameters are used to predict (n,f) cross sections in the same energy range. Possible shortcomings of decay models at high incident energies are discussed.

Published
2017
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24. The measurement programme at the neutron time-of-flight facility n_TOF at CERN

Author

International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Gunsing, Frank, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Castelluccio, Donato Maurizio, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés-Giraldo, Miguel Antonio, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Damone, Lucia Anna, Deo, Kapil, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Frost, Robert J. W., Furman, Valter, Ganesan, Srinivasan, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gheorghe, Ioana, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Göbel, Kathrin, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kalamara, Antigoni, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Kurtulgil, Cem Deniz, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui, Jorge, Licata, Mauro, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Negret, Alexandru, Oprea, Andreea, Palomo Pinto, Francisco Rogelio, Paradela Dobarro, Carlos, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rajeev, K., Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rout, Prakash Chandra, Rubbia, Carlo, Ryan, James, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Suryanarayana, Saraswatula Venkata, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tarrío Vilas, Diego, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, Wolf, Clemens, Woods, Philip John, Wright, Tobias, Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Gunsing, Frank, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Castelluccio, Donato Maurizio, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés-Giraldo, Miguel Antonio, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Damone, Lucia Anna, Deo, Kapil, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Frost, Robert J. W., Furman, Valter, Ganesan, Srinivasan, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gheorghe, Ioana, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Göbel, Kathrin, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kalamara, Antigoni, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Kurtulgil, Cem Deniz, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui, Jorge, Licata, Mauro, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Negret, Alexandru, Oprea, Andreea, Palomo Pinto, Francisco Rogelio, Paradela Dobarro, Carlos, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rajeev, K., Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rout, Prakash Chandra, Rubbia, Carlo, Ryan, James, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Suryanarayana, Saraswatula Venkata, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tarrío Vilas, Diego, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, Wolf, Clemens, Woods, Philip John, Wright, Tobias, and Žugec, Petar

Abstract

Neutron-induced reaction cross sections are important for a wide variety of research fields ranging from the study of nuclear level densities, nucleosynthesis to applications of nuclear technology like design, and criticality and safety assessment of existing and future nuclear reactors, radiation dosimetry, medical applications, nuclear waste transmutation, accelerator-driven systems and fuel cycle investigations. Simulations and calculations of nuclear technology applications largely rely on evaluated nuclear data libraries. The evaluations in these libraries are based both on experimental data and theoretical models. CERN’s neutron time-of-flight facility n_TOF has produced a considerable amount of experimental data since it has become fully operational with the start of its scientific measurement programme in 2001. While for a long period a single measurement station (EAR1) located at 185 m from the neutron production target was available, the construction of a second beam line at 20 m (EAR2) in 2014 has substantially increased the measurement capabilities of the facility. An outline of the experimental nuclear data activities at n_TOF will be presented.

Published
2017

25. High accuracy 234U(n,f) cross section in the resonance energy region

Author

International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Leal Cidoncha, Esther, Durán, Ignacio, Paradela Dobarro, Carlos, Tassan-Got, Laurent, Audouin, Laurent, Leal, Luiz C., Le Naour, Claire, Noguere, Gilles, Tarrío Vilas, Diego, Leong, Lou Sai, Altstadt, Sebastian, Andrzejewski, Józef, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gómez Hornillos, María Belén, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Gurusamy, Perumal, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Karadimos, Dimitri, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Lederer, Claudia, Leeb, Helmut, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Meaze, AKM Moinul Haque, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Roman, Faustin Laurenţiu, Rubbia, Carlo, Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Versaci, Roberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiß, Christina, Wright, Tobias, Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Leal Cidoncha, Esther, Durán, Ignacio, Paradela Dobarro, Carlos, Tassan-Got, Laurent, Audouin, Laurent, Leal, Luiz C., Le Naour, Claire, Noguere, Gilles, Tarrío Vilas, Diego, Leong, Lou Sai, Altstadt, Sebastian, Andrzejewski, Józef, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gómez Hornillos, María Belén, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Gurusamy, Perumal, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Karadimos, Dimitri, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Lederer, Claudia, Leeb, Helmut, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Meaze, AKM Moinul Haque, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Roman, Faustin Laurenţiu, Rubbia, Carlo, Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Versaci, Roberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiß, Christina, Wright, Tobias, and Žugec, Petar

Abstract

New results are presented of the 234U neutron-induced fission cross section, obtained with high accuracy in the resonance region by means of two methods using the 235U(n,f) as reference. The recent evaluation of the 235U(n,f) obtained with SAMMY by L. C. Leal et al. (these Proceedings), based on previous n_TOF data [1], has been used to calculate the 234U(n,f) cross section through the 234U/235U ratio, being here compared with the results obtained by using the n_TOF neutron flux.

Published
2017

26. The Nuclear Astrophysics program at n_TOF (CERN)

Author

Nuclear Physics in Astrophysics (Veranstaltung (8. : 2017 : Catania), Colonna, Nicola, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Bečvář, František, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Clai, Giulia, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kalamara, Antigoni, Kavrigin, Pavel, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Kroll, Jiří, Krtička, Milan, Kurtulgil, Cem Deniz, Langer, Christoph, Leal Cidoncha, Esther, Lederer, Claudia, Lerendegui-Marco, Jorge, Leeb, Helmut, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Mallick, Amod Kishore, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Mingrone, Federica, Milazzo, Paolo Maria, Mirea, Mihail, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weiß, Christina, Woods, Philip John, Wright, Tobias, Žugec, Petar, Nuclear Physics in Astrophysics (Veranstaltung (8. : 2017 : Catania), Colonna, Nicola, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Bečvář, František, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brown, Adam, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Clai, Giulia, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Cristallo, Sergio, Damone, Lucia Anna, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Göbel, Kathrin, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gilardoni, Simone, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Kalamara, Antigoni, Kavrigin, Pavel, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Kroll, Jiří, Krtička, Milan, Kurtulgil, Cem Deniz, Langer, Christoph, Leal Cidoncha, Esther, Lederer, Claudia, Lerendegui-Marco, Jorge, Leeb, Helmut, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Mallick, Amod Kishore, Marganiec, Justyna, Martı́nez, Trinitario, Masi, Alessandro, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Maugeri, Emilio Andrea, Mazzone, Annamaria, Mendoza Cembranos, Emilio, Mengoni, Alberto, Mingrone, Federica, Milazzo, Paolo Maria, Mirea, Mihail, Musumarra, Agatino, Negret, Alexandru, Nolte, Ralf, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Radeck, Désirée, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Sosnin, Nikolay V., Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weiß, Christina, Woods, Philip John, Wright, Tobias, and Žugec, Petar

Abstract

An important experimental program on Nuclear Astrophysics is being carried out at the n_TOF since several years, in order to address the still open issues in stellar and primordial nucleosynthesis. Several neutron capture reactions relevant to s-process nucleosynthesis have been measured so far, some of which on important branching point radioisotopes. Furthermore, the construction of a second experimental area has recently opened the way to challenging measurements of (n, charged particle) reactions on isotopes of short half-life. The Nuclear Astrophysics program of the n_TOF Collaboration is here described, with emphasis on recent results relevant for stellar nucleosynthesis, stellar neutron sources and primordial nucleosynthesis.

Published
2017

27. Measurement of the 240Pu(n,f) cross-section at the CERN n_TOF facility: first results from experimental area II (EAR-2)

Author

International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Stamatopoulos, Athanasios, Tsinganis, Andrea, Colonna, Nicola, Vlastou, Rosa, Kokkoris, Michael, Schillebeeckx, Peter, Plompen, Arjan J. M., Heyse, Jan, Žugec, Petar, Barbagallo, Massimo, Calviani, Marco, Berthoumieux, Eric, Chiaveri, Enrico, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Belloni, Fabio, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Cano-Ott, Daniel, Cerutti, Francesco, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Damone, Lucia Anna, Deo, Kapil, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Frost, Robert J. W., Furman, Valter, Göbel, Kathrin, Gómez Hornillos, María Belén, García Ríos, Aczel Regino, Gheorghe, Ioana, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Krtička, Milan, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Licata, Mauro, Lo Meo, Sergio, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Palomo Pinto, Francisco Rogelio, Paradela Dobarro, Carlos, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James, Sabaté-Gilarte, Marta, Saxena, Alok, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Suryanarayana, Saraswatula Venkata, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, Wright, Tobias, International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Stamatopoulos, Athanasios, Tsinganis, Andrea, Colonna, Nicola, Vlastou, Rosa, Kokkoris, Michael, Schillebeeckx, Peter, Plompen, Arjan J. M., Heyse, Jan, Žugec, Petar, Barbagallo, Massimo, Calviani, Marco, Berthoumieux, Eric, Chiaveri, Enrico, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Belloni, Fabio, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Cano-Ott, Daniel, Cerutti, Francesco, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Cosentino, Luigi, Damone, Lucia Anna, Deo, Kapil, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Frost, Robert J. W., Furman, Valter, Göbel, Kathrin, Gómez Hornillos, María Belén, García Ríos, Aczel Regino, Gheorghe, Ioana, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Krtička, Milan, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Licata, Mauro, Lo Meo, Sergio, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Palomo Pinto, Francisco Rogelio, Paradela Dobarro, Carlos, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Porras Sánchez, José Ignacio, Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James, Sabaté-Gilarte, Marta, Saxena, Alok, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Suryanarayana, Saraswatula Venkata, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, and Wright, Tobias

Abstract

The accurate knowledge of the neutron-induced fission cross-sections of actinides and other isotopes involved in the nuclear fuel cycle is essential for the design of advanced nuclear systems, such as Generation-IV nuclear reactors. Such experimental data can also provide the necessary feedback for the adjustment of nuclear model parameters used in the evaluation process, resulting in the further development of nuclear fission models. In the present work, the 240Pu(n,f) cross-section was measured at CERN's n_TOF facility relative to the well-known 235U(n,f) cross section, over a wide range of neutron energies, from meV to almost MeV, using the time-of-flight technique and a set-up based on Micromegas detectors. This measurement was the first experiment to be performed at n_TOF's new experimental area (EAR-2), which offers a significantly higher neutron flux compared to the already existing experimental area (EAR-1). Preliminary results as well as the experimental procedure, including a description of the facility and the data handling and analysis, are presented.

Published
2017

28. Measurement of the neutron capture cross section of the fissile isotope 235U with the CERN n_TOF total absorption calorimeter and a fission tagging based on micromegas detectors

Author

International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Balibrea Correa, Javier, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Krtička, Milan, Altstadt, Sebastian, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Barbagallo, Massimo, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviño Tavares, Francisco, Calviani, Marco, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Durán, Ignacio, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Furman, Valter, Göbel, Kathrin, Guerrero Sánchez, Carlos, Gómez Hornillos, María Belén, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Gunsing, Frank, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Karadimos, Dimitri, Katabuchi, Tatsuya, Ketlerov, Vladimir, Khryachkov, Vitaly, Kivel, Nikolay, Koehler, Paul, Kokkoris, Michael, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Leong, Lou Sai, Lerendegui-Marco, Jorge, Licata, Mauro, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Paradela Dobarro, Carlos, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tarrío Vilas, Diego, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiss, Christian, Wright, Tobias, Žugec, Petar, International Conference on Nuclear Data for Science and Technology (2016 : Bruges), Balibrea Correa, Javier, Mendoza Cembranos, Emilio, Cano-Ott, Daniel, Krtička, Milan, Altstadt, Sebastian, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Barbagallo, Massimo, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviño Tavares, Francisco, Calviani, Marco, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Durán, Ignacio, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Furman, Valter, Göbel, Kathrin, Guerrero Sánchez, Carlos, Gómez Hornillos, María Belén, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Gunsing, Frank, Heftrich, Tanja, Heinitz, Stephan, Hernández Prieto, Álvaro, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Karadimos, Dimitri, Katabuchi, Tatsuya, Ketlerov, Vladimir, Khryachkov, Vitaly, Kivel, Nikolay, Koehler, Paul, Kokkoris, Michael, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Leong, Lou Sai, Lerendegui-Marco, Jorge, Licata, Mauro, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Paradela Dobarro, Carlos, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tarrío Vilas, Diego, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiss, Christian, Wright, Tobias, and Žugec, Petar

Abstract

The accuracy on neutron capture cross section of fissile isotopes must be improved for the design of future nuclear systems such as Gen-IV reactors and Accelerator Driven Systems. The High Priority Request List of the Nuclear Energy Agency, which lists the most important nuclear data requirements, includes also the neutron capture cross sections of fissile isotopes such as 233,235U and 239,241Pu. A specific experimental setup has been used at the CERN n_TOF facility for the measurement of the neutron capture cross section of 235U by a set of micromegas fission detectors placed inside a segmented BaF2 Total Absorption Calorimeter.

Published
2017

29. Neutron capture cross section measurement of 238U at the CERN n_TOF facility in the energy region from 1 eV to 700 keV

Author

Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Mingrone, Federica, Massimi, Cristian, Vannini, Gianni, Calviño Tavares, Francisco, Cortés Rossell, Guillem Pere, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Mingrone, Federica, Massimi, Cristian, Vannini, Gianni, Calviño Tavares, Francisco, and Cortés Rossell, Guillem Pere

Abstract

The aim of this work is to provide a precise and accurate measurement of the 238U(n, gamma) reaction cross section in the energy region from 1 eV to 700 keV. This reaction is of fundamental importance for the design calculations of nuclear reactors, governing the behavior of the reactor core. In particular, fast reactors, which are experiencing a growing interest for their ability to burn radioactive waste, operate in the high energy region of the neutron spectrum. In this energy region most recent evaluations disagree due to inconsistencies in the existing measurements of up to 15%. In addition, the assessment of nuclear data uncertainty performed for innovative reactor systems shows that the uncertainty in the radiative capture cross section of 238U should be further reduced to 1–3% in the energy region from 20 eV to 25 keV. To this purpose, addressed by the Nuclear Energy Agency as a priority nuclear data need, complementary experiments, one at the GELINA and two at the n_TOF facility, were proposed and carried out within the 7th Framework Project ANDES of the European Commission. The results of one of these 238U(n, gamma) measurements performed at the n_TOF CERN facility are presented in this work. The gamma-ray cascade following the radiative neutron capture has been detected exploiting a setup of two C6D6 liquid scintillators. Resonance parameters obtained from this work are on average in excellent agreement with the ones reported in evaluated libraries. In the unresolved resonance region, this work yields a cross section in agreement with evaluated libraries up to 80 keV, while for higher energies our results are significantly higher., Postprint (published version)

Published
2017

30. Erratum: Ni 62 (n,γ) and Ni 63 (n,γ) cross sections measured at the n-TOF facility at CERN [Phys. Rev. C (2014) 89 (025810)]

Author

Lederer, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., Gunsing, F., Käppeler, F., Kivel, N., Pignatari, M., Reifarth, R., Schumann, D., Wallner, A., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés Giraldo, M. A., Dillmann, I., Domingo Pardo, C., Duran, I., Dzysiuk, N., Eleftheriadis, C., Fernández Ordóñez, M., Ferrari, A., Fraval, K., Ganesan, S., García, A. R., Giubrone, G., Gómez Hornillos, M. B., Gonçalves, I. F., González Romero, E., Gramegna, F., Griesmayer, E., Gurusamy, P., Harrisopulos, S., Heil, M., Ioannides, K., Jenkins, D. G., Jericha, E., Kadi, Y., Karadimos, D., Korschinek, G., Krtička, M., Kroll, J., Langer, C., Lebbos, E., Leeb, H., Leong, L. S., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Marrone, S., Martinez, T., Mastinu, P. F., Mastromarco, M., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P. M., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plag, R., Plompen, A., Praena, J., Quesada, J. M., Rauscher, T., Riego, A., Roman, F., Rubbia, C., Sarmento, R., Schillebeeckx, P., Schmidt, S., Tagliente, G., Tain, J. L., Tarrío, D., Tassan Got, L., Tsinganis, A., Tlustos, L., Valenta, S., Variale, V., Vaz, P., Ventura, A., Vermeulen, M. J., Versaci, R., Vlachoudis, V., Vlastou, R., Ware, T., Weigand, M., Weiß, C., Wright, T. J., Žugec, P., MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Lederer, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., Gunsing, F., Käppeler, F., Kivel, N., Pignatari, M., Reifarth, R., Schumann, D., Wallner, A., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Dillmann, I., Domingo-Pardo, C., Duran, I., Dzysiuk, N., Eleftheriadis, C., Fernández-Ordóñez, M., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., González-Romero, E., Gramegna, F., Griesmayer, E., Gurusamy, P., Harrisopulos, S., Heil, M., Ioannides, K., Jenkins, D.G., Jericha, E., Kadi, Y., Karadimos, D., Korschinek, G., Krtička, M., Kroll, J., Langer, C., Lebbos, E., Leeb, H., Leong, L.S., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Marrone, S., Martinez, T., Mastinu, P.F., Mastromarco, M., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Paradela, C., Pavlik, A., Perkowski, J., Plag, R., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Riego, A., Roman, F., Rubbia, C., Sarmento, R., Schillebeeckx, P., Schmidt, S., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Tlustos, L., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Versaci, R., Vlachoudis, V., Vlastou, R., Ware, T., Weigand, M., Weiß, C., Wright, T.J., and Žugec, P.

Subjects
Nuclear and High Energy Physics
Abstract

An error was discovered in the calculation of the statistical spin factor gs , which was used for determining the capture kernels kγ listed in Table II. This error occurred due to a typo in the formula for calculating gs from the resonance parameters provided by SAMMY and affects only the values in Table II. The absolute values for the Maxwellian averaged cross sections are not affected, since those were calculated with the program SAMMY, directly on the basis of the correct parameters. Thus, the astrophysical implications remain unaltered.

Published
2015

31. High-accuracy determination of the U 238 / U 235 fission cross section ratio up to ≈1 GeV at n-TOF at CERN

Author

Paradela, C., Calviani, M., Tarrío, D., Leal Cidoncha, E., Leong, L. S., Tassan Got, L., Le Naour, C., Duran, I., Colonna, N., Audouin, L., Mastromarco, M., Ventura, A., Aerts, G., Altstadt, S., Álvarez, H., Álvarez Velarde, F., Andriamonje, S., Andrzejewski, J., Badurek, G., Barbagallo, M., Baumann, P., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviño, F., Cano Ott, D., Capote, R., Carrapiço, C., Cennini, P., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés Giraldo, M. A., Cosentino, L., Couture, A., Cox, J., David, S., Diakaki, M., Dillmann, I., Domingo Pardo, C., Dressler, R., Dridi, W., Eleftheriadis, C., Embid Segura, M., Ferrant, L., Ferrari, A., Finocchiaro, P., Fraval, K., Fujii, K., Furman, W., Ganesan, S., García, A. R., Giubrone, G., Gómez Hornillos, M. B., Gonçalves, I. F., González Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Haight, R., Heil, M., Heinitz, S., Igashira, M., Isaev, S., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Kivel, N., Kokkoris, M., Konovalov, V., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Lederer, C., Leeb, H., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Martínez, T., Marrone, S., Mastinu, P., Mendoza, E., Mengoni, A., Milazzo, P. M., Mirea, M., Mondelaers, W., Moreau, C., Mosconi, M., Musumarra, A., O'Brien, S., Pancin, J., Patronis, N., Pavlik, A., Pavlopoulos, P., Perkowski, J., Perrot, L., Pigni, M. T., Plag, R., Plompen, A., Plukis, L., Poch, A., Pretel, C., Praena, J., Quesada, J., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rudolf, G., Rubbia, C., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Stephan, C., Tagliente, G., Tain, J. L., Tavora, L., Terlizzi, R., Tsinganis, A., Valenta, S., Variale, V., Vaz, P., Versaci, R., Vermeulen, M. J., Villamarin, D., Vincente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Wallner, A., Walter, S., Ware, T., Weigand, M., Weiß, C., Wiesher, M., Wisshak, K., Wright, T., Žugec, P., LO MEO, SERGIO, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Paradela, C., Calviani, M., Tarrío, D., Leal-Cidoncha, E., Leong, L.S., Tassan-Got, L., Le Naour, C., Duran, I., Colonna, N., Audouin, L., Mastromarco, M., Lo Meo, S., Ventura, A., Aerts, G., Altstadt, S., Álvarez, H., Álvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Badurek, G., Barbagallo, M., Baumann, P., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviño, F., Cano-Ott, D., Capote, R., Carrapiço, C., Cennini, P., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Cosentino, L., Couture, A., Cox, J., David, S., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Dressler, R., Dridi, W., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Finocchiaro, P., Fraval, K., Fujii, K., Furman, W., Ganesan, S., García, A.R., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., González-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Haight, R., Heil, M., Heinitz, S., Igashira, M., Isaev, S., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Kivel, N., Kokkoris, M., Konovalov, V., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Lederer, C., Leeb, H., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Martínez, T., Marrone, S., Massimi, C., Mastinu, P., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondelaers, W., Moreau, C., Mosconi, M., Musumarra, A., O'Brien, S., Pancin, J., Patronis, N., Pavlik, A., Pavlopoulos, P., Perkowski, J., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, L., Poch, A., Pretel, C., Praena, J., Quesada, J., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rudolf, G., Rubbia, C., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Stephan, C., Tagliente, G., Tain, J.L., Tavora, L., Terlizzi, R., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Versaci, R., Vermeulen, M.J., Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Wallner, A., Walter, S., Ware, T., Weigand, M., Weiß, C., Wiesher, M., Wisshak, K., Wright, T., and Žugec, P.

Subjects
Nuclear and High Energy Physics, Nuclear Experiment
Abstract

The U238 to U235 fission cross section ratio has been determined at n-TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n-TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n-TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV.

Published
2015

32. Measurement of the 240Pu(n,f) cross-section at the CERN n-TOF facility: First results from EAR-2

Author

Tsinganis, A., Stamatopoulos, A., Colonna, N., Vlastou, R., Schillebeeckx, P., Plompen, A., Heyse, J., Kokkoris, M., Barbagallo, M., Berthoumieux, E., Calviani, M., Chiaveri, E., Aberle, O., Andrzejewski, J., Audouin, L., Bacak, M., Balibrea Correa, J., Barros, S., Bécares, Null, Bečvár, F., Beinrucker, C., Billowes, J., Bosnar, D., Brugger, M., Caamaño, M., Calviño, F., Cano Ott, D., Cerutti, F., Cortés, G., Cortés Giraldo, M. A., Cosentino, L., Damone, L., Deo, K., Diakaki, M., Domingo Pardo, C., Dressler, R., Dupont, E., Durán, I., Fernández Domínguez, B., Ferrari, A., Ferreira Gonalves, I., Finocchiaro, P., Frost, R., Furman, W., Göbel, K., Ganesan, S., Gheorghe, A., Glodariu, T., González, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Gunsing, F., Harada, H., Hehrich, T., Heinitz, S., Hernández Prieto, A., Jenkins, D., Jericha, E., Käppeler, F., Kadi, Y., Katabuchi, T., Kavrigin, P., Ketlerov, V., Khryachkov, V., Kimura, A., Kivel, N., Kriťka, M., Leal Cidoncha, E., Lederer, C., Leeb, H., Lerendegui, J., Licata, M., Losito, R., Macina, D., Marganiec, J., Martínez, T., Mastinu, P., Mastromarco, M., Matteucci, F., Mendoza, E., Mengoni, A., Milazzo, P., Mirea, M., Montesano, S., Musumarra, A., Nolte, R., Palomo Pinto, F., Paradela, C., Patronis, N., Pavlik, A., Perkowski, J., Porras Sanchez, I., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego Perez, A., Robles, M., Rubbia, C., Ryan, J., Sabaté Gilarte, M., Saxena, A., Schmidt, S., Schumann, D., Sedyshev, P., Smith, G., Steinegger, P., Suryanarayana, S. V., Tagliente, G., Tain, J. L., Tarifeõ Saldivia, A., Tassan Got, L., Valenta, V., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Wallner, A., Warren, S., Weiss, C., Weigand, M., Wright, T., Žugec, P., LO MEO, SERGIO, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Tsinganis, A., Stamatopoulos, A., Colonna, N., Vlastou, R., Schillebeeckx, P., Plompen, A., Heyse, J., Kokkoris, M., Barbagallo, M., Berthoumieux, E., Calviani, M., Chiaveri, E., Aberle, O., Andrzejewski, J., Audouin, L., Bacak, M., Balibrea-Correa, J., Barros, S., Bécares, Null, Bečvár, F., Beinrucker, C., Billowes, J., Bosnar, D., Brugger, M., Caamaño, M., Calviño, F., Cano-Ott, D., Cerutti, F., Cortés, G., Cortés-Giraldo, M.A., Cosentino, L., Damone, L., Deo, K., Diakaki, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Durán, I., Fernández-Domínguez, B., Ferrari, A., Ferreira-Gonalves, I., Finocchiaro, P., Frost, R., Furman, W., Göbel, K., Ganesan, S., Gheorghe, A., Glodariu, T., González, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Gunsing, F., Harada, H., Hehrich, T., Heinitz, S., Hernández-Prieto, A., Jenkins, D., Jericha, E., Käppeler, F., Kadi, Y., Katabuchi, T., Kavrigin, P., Ketlerov, V., Khryachkov, V., Kimura, A., Kivel, N., Kriťka, M., Leal-Cidoncha, E., Lederer, C., Leeb, H., Lerendegui, J., Licata, M., Lo Meo, S., Losito, R., Macina, D., Marganiec, J., Martínez, T., Mastinu, P., Massimi, C., Mastromarco, M., Matteucci, F., Mendoza, E., Mengoni, A., Milazzo, P., Mingrone, F., Mirea, M., Montesano, S., Musumarra, A., Nolte, R., Palomo-Pinto, F., Paradela, C., Patronis, N., Pavlik, A., Perkowski, J., Porras-Sanchez, I., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego-Perez, A., Robles, M., Rubbia, C., Ryan, J., Sabaté-Gilarte, M., Saxena, A., Schmidt, S., Schumann, D., Sedyshev, P., Smith, G., Steinegger, P., Suryanarayana, S.V., Tagliente, G., Tain, J.L., Tarifeõ-Saldivia, A., Tassan-Got, L., Valenta, V., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Wallner, A., Warren, S., Weiss, C., Weigand, M., Wright, T., and Žugec, P.

Subjects
Nuclear and High Energy Physics, Nuclear Energy and Engineering, Energy Engineering and Power Technology
Abstract

The accurate knowledge of neutron cross-sections of a variety of plutonium isotopes and other minor actinides, such as neptunium, americium and curium, is crucial for feasibility and performance studies of advanced nuclear systems (Generation-IV reactors, Accelerator Driven Systems). In this context, the 240Pu(n,f) cross-section was measured with the time-of-flight technique at the CERN n-TOF facility at incident neutron energies ranging from thermal to several MeV. The present measurement is the first to have been performed at n-TOF's newly commissioned Experimental Area II (EAR-2), which is located at the end of an 18 m neutron beam-line and features a neutron fluence that is 25-30 times higher with respect to the existing 185 m flight-path (EAR-1), as well as stronger suppression of sample-induced backgrounds, due to the shorter times-of-flight involved. Preliminary results are presented.

Published
2015

33. The CERN n_TOF facility: a unique tool for nuclear data measurement

Author

Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Cortés Giraldo, Miguel Antonio, Guerrero Sánchez, Carlos, Lerendegui Marco, Jorge, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, Vannini, Gianni, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Cortés Giraldo, Miguel Antonio, Guerrero Sánchez, Carlos, Lerendegui Marco, Jorge, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, and Vannini, Gianni

Abstract

The study of the resonant structures in neutron-nucleus cross-sections, and therefore of the compound-nucleus reaction mechanism, requires spectroscopic measurements to determine with high accuracy the energy of the neutron interacting with the material under study. To this purpose, the neutron time-of-flight facility n_TOF has been operating since 2001 at CERN. Its characteristics, such as the high intensity instantaneous neutron flux, the wide energy range from thermal to few GeV, and the very good energy resolution, are perfectly suited to perform high-quality measurements of neutron-induced reaction cross sections. The precise and accurate knowledge of these cross sections plays a fundamental role in nuclear technologies, nuclear astrophysics and nuclear physics. Two different measuring stations are available at the n_TOF facility, called EAR1 and EAR2, with different characteristics of intensity of the neutron flux and energy resolution. These experimental areas, combined with advanced detection systems lead to a great flexibility in performing challenging measurement of high precision and accuracy, and allow the investigation isotopes with very low cross sections, or available only in small quantities, or with very high specific activity. The characteristics and performances of the two experimental areas of the n_TOF facility will be presented, together with the most important measurements performed to date and their physics case. In addition, the significant upcoming measurements will be introduced

Published
2016

34. The CERN n_TOF facility: a unique tool for nuclear data measurement

Author

International Workshop on Compound-Nuclear Reactions and Related Topics (5. : 2016 : Tokio), Mingrone, Federica, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Castelluccio, Donato Maurizio, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés-Giraldo, Miguel Antonio, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Damone, Lucia Anna, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Ganesan, Srinivasan, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gheorghe, Ioana, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Göbel, Kathrin, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martínez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Praena, Javier, Quesada Molina, José Manuel, Rajeev, K., Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Rout, Prakash Chandra, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, Wolf, Clemens, Woods, Philip John, Wright, Tobias, Žugec, Petar, International Workshop on Compound-Nuclear Reactions and Related Topics (5. : 2016 : Tokio), Mingrone, Federica, Aberle, Oliver, Andrzejewski, Józef, Audouin, Laurent, Bécares, Vicente, Bacak, Michael, Balibrea Correa, Javier, Barbagallo, Massimo, Barros, Susana C.C., Bečvář, František, Beinrucker, Clemens, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brugger, Markus, Caamaño, Manuel, Calviño Tavares, Francisco, Calviani, Marco, Cano-Ott, Daniel, Cardella, Roberto, Casanovas Hoste, Adrià, Castelluccio, Donato Maurizio, Cerutti, Francesco, Chen, Yonghao, Chiaveri, Enrico, Colonna, Nicola, Cortés-Giraldo, Miguel Antonio, Cortés Rossell, Guillem Pere, Cosentino, Luigi, Damone, Lucia Anna, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dupont, Emmeric, Durán, Ignacio, Fernández Domínguez, Beatriz, Ferrari, Alfredo, Ferreira, Pedro G., Finocchiaro, Paolo, Furman, Valter, Ganesan, Srinivasan, García Ríos, Aczel Regino, Gawlik, Aleksandra, Gheorghe, Ioana, Glodariu, Tudor, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Goverdovski, Andrey, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Göbel, Kathrin, Harada, Hideo, Heftrich, Tanja, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Jericha, Erwin, Käppeler, Franz, Kadi, Yacine, Katabuchi, Tatsuya, Kavrigin, Pavel, Ketlerov, Vladimir, Khryachkov, Vitaly, Kimura, Atsushi, Kivel, Nikolay, Kokkoris, Michael, Krtička, Milan, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Lerendegui, Jorge, Lo Meo, Sergio, Lonsdale, Sarah Jane, Losito, Roberto, Macina, Daniela, Marganiec, Justyna, Martínez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Matteucci, Francesca, Maugeri, Emilio Andrea, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mirea, Mihail, Montesano, Simone, Musumarra, Agatino, Nolte, Ralf, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Praena, Javier, Quesada Molina, José Manuel, Rajeev, K., Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Rout, Prakash Chandra, Rubbia, Carlo, Ryan, James A., Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Sedyshev, Pavel V., Smith, Alastair Gavin, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Warren, Stephen J., Weigand, Mario, Weiß, Christina, Wolf, Clemens, Woods, Philip John, Wright, Tobias, and Žugec, Petar

Abstract

he study of the resonant structures in neutron-nucleus cross-sections, and therefore of the compound-nucleus reaction mechanism, requires spectroscopic measurements to determine with high accuracy the energy of the neutron interacting with the material under study. To this purpose, the neutron time-of-flight facility n_TOF has been operating since 2001 at CERN. Its characteristics, such as the high intensity instantaneous neutron flux, the wide energy range from thermal to few GeV, and the very good energy resolution, are perfectly suited to perform high-quality measurements of neutron-induced reaction cross sections. The precise and accurate knowledge of these cross sections plays a fundamental role in nuclear technologies, nuclear astrophysics and nuclear physics. Two different measuring stations are available at the n_TOF facility, called EAR1 and EAR2, with different characteristics of intensity of the neutron flux and energy resolution. These experimental areas, combined with advanced detection systems lead to a great flexibility in performing challenging measurement of high precision and accuracy, and allow the investigation isotopes with very low cross sections, or available only in small quantities, or with very high specific activity. The characteristics and performances of the two experimental areas of the n_TOF facility will be presented, together with the most important measurements performed to date and their physics case. In addition, the significant upcoming measurements will be introduced.

Published
2016

35. Fission fragment angular distribution measurements of 235U and 238U at CERN n_TOF facility

Author

International Workshop on Nuclear Data Evaluation for Reactor Applications (4. : 2015 : Aix-en-Provence), Leal Cidoncha, Esther, Durán, Ignacio, Paradela Dobarro, Carlos, Tarrío Vilas, Diego, Leong, Lou Sai, Tassan-Got, Laurent, Audouin, Laurent, Altstadt, Sebastian, Andrzejewski, Józef, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dzysiuk, Nataliia, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gómez Hornillos, María Belén, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Gurusamy, Perumal, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Karadimos, Dimitri, Kivel, Nikolay, Koehler, Paul, Kokkoris, Michael, Krtička, Milan, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Lederer, Claudia, Leeb, Helmut, Lo Meo, Sergio, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Meaze, AKM Moinul Haque, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Roman, Faustin Laurenţiu, Rubbia, Carlo, Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Versaci, Roberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiß, Christina, Wright, Tobias, Žugec, Petar, International Workshop on Nuclear Data Evaluation for Reactor Applications (4. : 2015 : Aix-en-Provence), Leal Cidoncha, Esther, Durán, Ignacio, Paradela Dobarro, Carlos, Tarrío Vilas, Diego, Leong, Lou Sai, Tassan-Got, Laurent, Audouin, Laurent, Altstadt, Sebastian, Andrzejewski, Józef, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Boccone, Vittorio, Bosnar, Damir, Brugger, Markus, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Michael, Colonna, Nicola, Cortés Rossell, Guillem Pere, Cortés-Giraldo, Miguel Antonio, Diakaki, Maria, Domingo-Pardo, César, Dressler, Rugard, Dzysiuk, Nataliia, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Ganesan, Srinivasan, García Ríos, Aczel Regino, Giubrone, Giuseppe, Gómez Hornillos, María Belén, Gonçalves, Isabel Maria Ferro, González Romero, Enrique Miguel, Griesmayer, Erich, Guerrero Sánchez, Carlos, Gunsing, Frank, Gurusamy, Perumal, Hernández Prieto, Álvaro, Jenkins, David, Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Karadimos, Dimitri, Kivel, Nikolay, Koehler, Paul, Kokkoris, Michael, Krtička, Milan, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Lederer, Claudia, Leeb, Helmut, Lo Meo, Sergio, Losito, Roberto, Mallick, Amod Kishore, Manousos, Athanasios, Marganiec, Justyna, Martı́nez, Trinitario, Massimi, Cristian, Mastinu, Pierfrancesco, Mastromarco, Mario, Meaze, AKM Moinul Haque, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mingrone, Federica, Mirea, Mihail, Mondelaers, Willy, Pavlik, Andreas, Perkowski, Jarosław, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles Manzano, Maria Soledad, Roman, Faustin Laurenţiu, Rubbia, Carlo, Sabaté-Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schillebeeckx, Peter, Schmidt, Stefan, Schumann, Dorothea, Tagliente, Giuseppe, Taı́n Enríquez, José Luis, Tsinganis, Andrea, Valenta, Stanislav, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Versaci, Roberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiß, Christina, Wright, Tobias, and Žugec, Petar

Abstract

Neutron-induced fission cross sections of 238U and 235U are used as standards in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to experimentally determine other neutron reaction cross sections. Therefore, the detection effciency should be corrected by using the angular distribution of the fission fragments (FFAD), which are barely known above 20 MeV. In addition, the angular distribution of the fragments produced in the fission of highly excited and deformed nuclei is an important observable to investigate the nuclear fission process. In order to measure the FFAD of neutron-induced reactions, a fission detection setup based on parallel-plate avalanche counters (PPACs) has been developed and successfully used at the CERN-n_TOF facility. In this work, we present the preliminary results on the analysis of new 235U(n,f) and 238U(n,f) data in the extended energy range up to 200 MeV compared to the existing experimental data.

Published
2016

36. Monte Carlo calculations of nucleon-induced fission in the GeV energy range.

Author

Lo Meo, Sergio, Mancusi, Davide, Massimi, Cristian, Tarrio, Diego, Vannini, Gianni, and Ventura, Alberto

Subjects
MONTE Carlo method, MATHEMATICAL models, ACTINIDE elements, FISSION cross sections, NUMERICAL calculations
Abstract

The article presents the Monte Carlo calculations of nucleon-induced fission on actinides and preactinides. It mentions that fission induced by nucleons at intermediate energies is frequently described as a three-stage process which includes a fast cascade phase, a pre-equilibrium phase and a final evaporation-fission of equilibrated heavy remnants produced by the fast processes.

Published
2017
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37. The nucleosynthesis of heavy elements in Stars: the key isotope 25Mg

Author

Massimi, Cristian, Koehler, Paul Edward, Kopecky, Stefan, Mingrone, Federica, Schillebeeckx, Peter, Vannini, Gianni, Altstadt, Sebastian, Andrzejewski, Józef, Audouin, Ludmila, Barbagallo, Massimo, Bécares, Vicente, Bečvář, František, Belloni, Fabio, Berthoumieux, Eric, Billowes, Jonathan, Bosnar, Damir, Brugger, Markus, Calviani, Marco, Calviño Tavares, Francisco, Cano-Ott, Daniel, Carrapiço, Carlos, Cerutti, Francesco, Chiaveri, Enrico, Chin, Mary, Colonna, Nicola, Eleftheriadis, Christos, Ferrari, Alfredo, Fraval, Kevin, Ganesan, Srinivasan, García, Aczel Regino, Giubrone, Giuseppe, Gonçalves, Isabel F., González Romero, Enrique, Griesmayer, Erich, Guerrero, Carlos, Gunsing, Frank, Hernández Prieto, Alvaro, Jenkins, David G., Jericha, Erwin, Kadi, Yacine, Käppeler, Franz, Karadimos, Dimitri, Kivel, Nikolai, Krtička, Milan, Kroll, Jiří, Lampoudis, Christos, Langer, Christoph, Leal Cidoncha, Esther, Lederer, Claudia, Leeb, Helmut, Leong, Lou Sai, Losito, Roberto, Mallick, Amod K., Manousos, Athanasios, Marganiec, Justyna, Martínez, Trinitario, Mastinu, Pier Francesco, Mastromarco, Mario, Mendoza Cembranos, Emilio, Mengoni, Alberto, Milazzo, Paolo Maria, Mirea, Mihail, Mondalaers, Willy, Paradela Dobarro, Carlos, Pavlik, Andreas, Perkowski, Jaroslaw, Plompen, Arjan J. M., Praena, Javier, Quesada Molina, José Manuel, Rauscher, Thomas, Reifarth, René, Riego Pérez, Albert, Robles, Marisol S., Rubbia, Carlo, Sabaté Gilarte, Marta, Sarmento, Raul, Saxena, Alok, Schmidt, Sebastian, Schumann, Dorothea, Tagliente, Giuseppe, Tain, Jose Luis, Tarrío, Diego, Tassan-Got, Laurent, Tsinganis, Andrea, Valenta, Stanislav, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vermeulen, Mark J., Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Ware, Timothy, Weigand, Mario, Weiß, Christina, Wright, Tobias, Žugec, Petar, and INPC 2013 – International Nuclear Physics Conference

Subjects
Astrophysics::High Energy Astrophysical Phenomena, ddc:530, Nuclear Experiment
Abstract

We have measured the radiative neutron-capture cross section and the total neutron-induced cross section of one of the most important isotopes for the s process, the 25Mg. The measurements have been carried out at the neutron time-of-flight facilities n_TOF at CERN (Switzerland) and GELINA installed at the EC-JRC-IRMM (Belgium). The cross sections as a function of neutron energy have been measured up to approximately 300 keV, covering the energy region of interest to the s process. The data analysis is ongoing and preliminary results show the potential relevance for the s process.

Published
2014

38. New Measurement of the Mg-25(n,gamma) Reaction Cross Section

Author

MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Massimi, C., Mingrone, F., and Vannini, G.

Subjects
Capture cross section, neutron, TOF, s process
Abstract

The 25Mg(n,γ) reaction cross-section has been measured at the neutron time-of-flight facility n_TOF at CERN in 2003 and, with an improved experimental set up, in 2012. These measurements aim at addressing important astrophysical issues related to the s process. Highly-enriched 25Mg samples have been used, in the form of MgO powder and Mg metal sample. Preliminary results from the 2012 measurement and comparisons with previous data are shown.

Published
2014

39. Measurement of the U-238 Radiative Capture Cross Section with C6D6 at the CERN n_TOF Facility

Author

MINGRONE, FEDERICA, MASSIMI, CRISTIAN, VANNINI, GIANNI, Mingrone, F., Massimi, C., and Vannini, G.

Subjects
238U, neutron capture, time of flight, cross section, Physics::Instrumentation and Detectors, Nuclear Experiment
Abstract

We present the preliminary results of the 238 U(n,gamma) reaction cross section measurement, performed on April 2012 at the CERN n_TOF facility using C6D6 scintillation detectors over an energy range from thermal to 1 MeV. The goal of this measurement, which is part of a larger proposal, is to reach an uncertainty of 2% in the cross section. The experimental set-up and the methods used to obtain this result are described.

Published
2014

40. Measurements of neutron cross sections for advanced nuclear energy systems at n_TOF (CERN)

Author

Cortés Giraldo, Miguel Antonio, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, Vannini, Gianni, Variale, Vincenzo, Ventura, A., and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear Theory, Physics::Accelerator Physics, Nuclear Experiment
Abstract

INPC 2013 – International Nuclear Physics Conference The n_TOF facility operates at CERN with the aim of addressing the request of high accuracy nuclear data for advanced nuclear energy systems as well as for nuclear astrophysics. Thanks to the features of the neutron beam, important results have been obtained on neutron induced fission and capture cross sections of U, Pu and minor actinides. Recently the construction of another beam line has started; the new line will be complementary to the first one, allowing to further extend the experimental program foreseen for next measurement campaigns

Published
2014

41. A Micromegas Detector for Neutron Beam Imaging at the n_TOF Facility at CERN

Author

MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Massimi, C., Mingrone, F., and Vannini, G.

Subjects
Physics::Instrumentation and Detectors, Micromegs, Neutron Imaginf, TOF, Nuclear Experiment
Abstract

Micromegas (Micro-MEsh Gaseous Structure) detectors are gas detectors consisting of a stack of one ionization and one proportional chamber. A micromesh separates the two communicating regions, where two different electric fields establish respectively a charge drift and a charge multiplication regime. The n_TOF facility at CERN provides a white neutron beam (from thermal up to GeV neutrons) for neutron induced cross section measurements. These measurements need a perfect knowlodge of the incident neutron beam, in particular regarding its spatial profile. A position sensitive micromegas detector equipped with a B-10 based neutron/charged particle converter has been extensively used at the n_TOF facility for characterizing the neutron beam profile and extracting the beam interception factor for samples of different size. The boron converter allowed to scan the energy region of interest for neutron induced capture reactions as a function of the neutron energy, determined by the time of flight. Experimental results will be presented and compared to simulations, performed by means of the FLUKA code.

Published
2014

42. Neutron-induced fission cross section of U-234 measured at the CERN n_TOF facility

Author

D. Karadimos, R. Vlastou, K. Ioannidis, P. Demetriou, M. Diakaki, V. Vlachoudis, P. Pavlopoulos, V. Konovalov, U. Abbondanno, G. Aerts, H. Alvarez, F. Alvarez Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthoumieux, F. Calvino, D. Cano Ott, R. Capote, A. C. de, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, S. David, R. Dolfini, C. Domingo Pardo, A. Dorochenko, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid Segura, L. Ferrant, A. Ferrari, R. Ferreira Marques, L. Fitzpatrick, H. Frais Koelbl, K. Fuji, W. Furman, I. Goncalves, R. Gallino, P. Cennini, E. Gonzalez Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karamanis, M. Kerveno, V. Ketlerov, P. Koehler, D. Kolokolov, M. Krticka, C. Lamboudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, L. Marques, S. Marrone, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, L. Perrot, R. Plag, A. Plompen, A. Plukis, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, M. Sedysheva, K. Stamoulis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan Got, L. Tavora, R. Terlizzi, A. Tsinganis, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, F. Voss, H. Wendler, M. Wiescher, K. Wisshak, MASSIMI, CRISTIAN, VANNINI, GIANNI, D. Karadimo, R. Vlastou, K. Ioannidi, P. Demetriou, M. Diakaki, V. Vlachoudi, P. Pavlopoulo, V. Konovalov, U. Abbondanno, G. Aert, H. Alvarez, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, L. Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthoumieux, F. Calvino, D. Cano-Ott, R. Capote, A. C. de, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, S. David, R. Dolfini, C. Domingo-Pardo, A. Dorochenko, W. Dridi, I. Duran, C. Eleftheriadi, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marque, L. Fitzpatrick, H. Frais-Koelbl, K. Fuji, W. Furman, I. Goncalve, R. Gallino, P. Cennini, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karamani, M. Kerveno, V. Ketlerov, P. Koehler, D. Kolokolov, M. Krticka, C. Lamboudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, L. Marque, S. Marrone, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, L. Perrot, R. Plag, A. Plompen, A. Pluki, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidi, M. Sedysheva, K. Stamouli, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, A. Tsingani, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, F. Vo, H. Wendler, M. Wiescher, and K. Wisshak

Subjects
MINOR ACTINIDES TRANSMUTATIONS, Nuclear Experiment, NEUTRON TIME OF FLIGHT, NEUTRON INDUCED FISSION
Abstract

The neutron-induced fission cross section of U234 has been measured at the CERN n_TOF facility relative to the standard fission cross section of U235 from 20 keV to 1.4 MeV and of U238 from 1.4 to 200 MeV. A fast ionization chamber (FIC) was used as a fission fragment detector with a detection efficiency of no less than 97%. The high instantaneous flux and the low background characterizing the n_TOF facility resulted in wide-energy-range data (0.02 to 200 MeV), with high energy resolution, high statistics, and systematic uncertainties bellow 3%. Previous investigations around the energy of the fission threshold revealed structures attributed to β-vibrational levels, which have been confirmed by the present measurements. Theoretical calculations have been performed, employing the talys code with model parameters tuned to fairly reproduce the experimental data.

Published
2014

43. Measurement and analysis of the Am-243 neutron capture cross section at the n_TOF facility at CERN

Author

E. Mendoza, D. Cano Ott, C. Guerrero, E. Berthoumieux, U. Abbondanno, G. Aerts, F. Alvarez Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, J. Balibrea, P. Baumann, F. Becvar, F. Belloni, F. Calvino, M. Calviani, R. Capote, C. Carrapico, A. C. de, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, R. Dolfini, C. Domingo Pardo, W. Dridi, I. Duran, C. Eleftheriadis, L. Ferrant, A. Ferrari, R. Ferreira Marques, L. Fitzpatrick, H. Frais Koelbl, K. Fujii, W. Furman, I. Goncalves, E. Gonzalez Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera Martinez, M. Igashira, S. Isaev, E. Jericha, F. Kaeppeler, Y. Kadi, D. Karadimos, D. Karamanis, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionides, M. Krticka, C. Lampoudis, H. Leeb, A. Lindote, S. L. Meo, I. Lopes, R. Lossito, M. Lozano, S. Lukic, J. Marganiec, L. Marques, S. Marrone, T. Martinez, MASSIMI, CRISTIAN, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neves, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santos, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan Got, L. Tavora, R. Terlizzi, VANNINI, GIANNI, P. Vaz, A. Ventura, D. Villamarin, M. C. Vicente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, H. Wendler, M. Wiescher, K. Wisshak, E. Mendoza, D. Cano-Ott, C. Guerrero, E. Berthoumieux, U. Abbondanno, G. Aert, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, L. Audouin, G. Badurek, J. Balibrea, P. Baumann, F. Becvar, F. Belloni, F. Calvino, M. Calviani, R. Capote, C. Carrapico, A. C. de, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillmann, R. Dolfini, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadi, L. Ferrant, A. Ferrari, R. Ferreira-Marque, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, I. Goncalve, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, F. Kaeppeler, Y. Kadi, D. Karadimo, D. Karamani, V. Ketlerov, M. Kerveno, P. Koehler, V. Konovalov, E. Kossionide, M. Krticka, C. Lampoudi, H. Leeb, A. Lindote, S. L. Meo, I. Lope, R. Lossito, M. Lozano, S. Lukic, J. Marganiec, L. Marque, S. Marrone, T. Martinez, C. Massimi, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, S. O'Brien, M. Oshima, J. Pancin, C. Papachristodoulou, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, M. T. Pigni, R. Plag, A. Plompen, A. Pluki, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, C. Santo, L. Sarchiapone, I. Savvidi, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vicente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, H. Wendler, M. Wiescher, and K. Wisshak

Subjects
RADIATIVE NEUTRON CAPTURE, NEUTRON TIME OF FLIGHT
Abstract

Background: The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Improvement of the Am243(n,γ) cross section uncertainty. Method: The Am243(n,γ) cross section has been measured at the n-TOF facility at CERN with a BaF2 total absorption calorimeter, in the energy range between 0.7 eV and 2.5 keV. Results: The Am243(n,γ) cross section has been successfully measured in the mentioned energy range. The resolved resonance region has been extended from 250 eV up to 400 eV. In the unresolved resonance region our results are compatible with one of the two incompatible capture data sets available below 2.5 keV. The data available in EXFOR and in the literature have been used to perform a simple analysis above 2.5 keV. Conclusions: The results of this measurement contribute to reduce the Am243(n,γ) cross section uncertainty and suggest that this cross section is underestimated up to 25% in the neutron energy range between 50 eV and a few keV in the present evaluated data libraries. Background: The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Improvement of the Am243(n,γ) cross section uncertainty. Method: The Am243(n,γ) cross section has been measured at the n-TOF facility at CERN with a BaF2 total absorption calorimeter, in the energy range between 0.7 eV and 2.5 keV. Results: The Am243(n,γ) cross section has been successfully measured in the mentioned energy range. The resolved resonance region has been extended from 250 eV up to 400 eV. In the unresolved resonance region our results are compatible with one of the two incompatible capture data sets available below 2.5 keV. The data available in EXFOR and in the literature have been used to perform a simple analysis above 2.5 keV. Conclusions: The results of this measurement contribute to reduce the Am243(n,γ) cross section uncertainty and suggest that this cross section is underestimated up to 25% in the neutron energy range between 50 eV and a few keV in the present evaluated data libraries.

Published
2014

44. Measurement and Analysis of Am-241(n,gamma) Cross Sections with C6D6 Detectors at the n_TOF Facility at CERN

Author

MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Massimi, C., Mingrone, F., and Vannini, G.

Subjects
n_TOF facility, capture cross section, neutron
Abstract

The Am-241(n,gamma) cross sections have been measured at the n_TOF facility at CERN using C6D6 liquid scintillators and time of flight spectrometry. The results in the resolved resonance range bring new constraints to evaluations below 150 eV, and the energy upper limit can be extended from 150 eV to 320 eV. The analysis goes from thermal energy to 150 keV, and the unresolved resonance range cross section turns out to be larger than expected by evaluations or otherwise measured by previous works. The thermal cross section is found to be sigma th = 740 +/- 74 barns, which is larger than expected by evaluations and most previous measurements.

Published
2014

45. Neutron cross-sections for advanced nuclear systems: the n_TOF project at CERN

Author

Cortés Giraldo, Miguel Antonio, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, González Romero, Enrique M, Mendoza, Emilio, Vannini, Gianni, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

E2C 2013 – 3rd European Energy Conference The study of neutron-induced reactions is of high relevance in a wide variety of fields, ranging from stellar nucleosynthesis and fundamental nuclear physics to applications of nuclear technology. In nuclear energy, high accuracy neutron data are needed for the development of Generation IV fast reactors and accelerator driven systems, these last aimed specifically at nuclear waste incineration, as well as for research on innovative fuel cycles. In this context, a high luminosity Neutron Time Of Flight facility, n_TOF, is operating at CERN since more than a decade, with the aim of providing new, high accuracy and high resolution neutron cross-sections. Thanks to the features of the neutron beam, a rich experimental program relevant to nuclear technology has been carried out so far. The program will be further expanded in the near future, thanks in particular to a new high-flux experimental area, now under construction

Published
2014

46. Measurement and analysis of the Am-241(n,gamma) cross section with liquid scintillator detectors using time-of-flight spectroscopy at the n_TOF facility at CERN

Author

K. Fraval, F. Gunsing, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Cortes, M. A. Cortes Giraldo, M. Diakaki, C. Domingo Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez Hornillos, I. F. Goncalves, E. Gonzalez Romero, E. Griesmayer, C. Guerrero, P. Gurusamy, A. Hernandez Prieto, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimos, N. Kivel, P. Koehler, M. Kokkoris, M. Krticka, J. Kroll, C. Lampoudis, C. Langer, E. Leal Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manousos, J. Marganiec, T. Martinez, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, M. Mirea, W. Mondalaers, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Robles, F. Roman, C. Rubbia, M. Sabate Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan Got, A. Tsinganis, S. Valenta, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudis, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Weiss, T. Wright, P. Zugec, MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, K. Fraval, F. Gunsing, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becare, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowe, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Corte, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadi, A. Ferrari, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillo, I. F. Goncalve, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, P. Gurusamy, A. Hernandez-Prieto, D. G. Jenkin, E. Jericha, Y. Kadi, F. Kappeler, D. Karadimo, N. Kivel, P. Koehler, M. Kokkori, M. Krticka, J. Kroll, C. Lampoudi, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, R. Losito, A. Mallick, A. Manouso, J. Marganiec, T. Martinez, C. Massimi, P. F. Mastinu, M. Mastromarco, M. Meaze, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondalaer, C. Paradela, A. Pavlik, J. Perkowski, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Roble, F. Roman, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsingani, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudi, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Wei, T. Wright, and P. Zugec

Subjects
radiative capture cross section, NEUTRON TIME OF FLIGHT
Abstract

The Am241(n,γ) cross section has been measured at the n_TOF facility at CERN using deuterated benzene liquid scintillators, commonly known as C6D6 detectors, and time-of-flight spectrometry. The results in the resolved resonance range bring new constraints to evaluations below 150 eV, and the energy upper limit was extended from 150 to 320 eV with a total of 172 new resonances not present in current evaluations. The thermal capture cross section was found to be σth=678±68 b, which is in good agreement with evaluations and most previous measurements. The capture cross section in the unresolved resonance region was extracted in the remaining energy range up to 150 keV, and found to be larger than current evaluations and previous measurements.

Published
2014

47. Fission Fragment Angular Distribution of Th-232(n,f) at the CERN n_TOF Facility

Author

MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Massimi, C., Mingrone, F., and Vannini, G.

Subjects
Physics::Instrumentation and Detectors, Nuclear Theory, Physics::Accelerator Physics, Nuclear Experiment, Fission fragment, fission cross section, TOF, PPAC
Abstract

The angular distribution of fragments emitted in neutron-induced fission of Th-232 was measured in the white spectrum neutron beam at the n_TOF facility at CERN. A reaction chamber based on Parallel Plate Avalanche Counters (PPAC) was used, where the detectors and the targets have been tilted 45 degrees with respect to the neutron beam direction in order to cover the full angular range of the fission fragments. A GEANT4 simulation has been developed to study the setup efficiency. The data analysis and the preliminary results obtained for the Th-232(n,f) between fission threshold and 100 MeV are presented here.

Published
2014

48. Investigation of Neutron-induced Reactions at n_TOF: an Overview of the 2009-2012 Experimental Program

Author

MASSIMI, CRISTIAN, MINGRONE, FEDERICA, VANNINI, GIANNI, Massimi, C., Mingrone, F., and Vannini, G.

Subjects
n_TOF, CERN, Cross section, neutron
Abstract

The neutron time-of-flight facility n_TOF is operating at CERN (Switzerland) since 2001, having started in 2009 a new campaign with an upgraded spallation target. The ambitious program carried out includes a large number of experiments in nuclear technology, astrophysics, basic physics, detector development and medical applications. This paper is devoted to the physics program at n_TOF and the measurements performed between 2009 and 2012. Special attention is given to those experiments that have been most challenging, are more important for a particular field, have reached unprecedented levels of accuracy, or have been carried out for the first time ever. Capture yield

Published
2014

49. The nucleosynthesis of heavy elements in stars: the key isotope 25Mg

Author

Cortés Giraldo, Miguel Antonio, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, Mingrone, F, Massimi, C., Vannini, Gianni, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Experiment
Abstract

INPC 2013 – International Nuclear Physics Conference We have measured the radiative neutron-capture cross section and the total neutron-induced cross section of one of the most important isotopes for the s process, the 25Mg. The measurements have been carried out at the neutron time-of-flight facilities n_TOF at CERN (Switzerland) and GELINA installed at the EC-JRC-IRMM (Belgium). The cross sections as a function of neutron energy have been measured up to approximately 300 keV, covering the energy region of interest to the s process. The data analysis is ongoing and preliminary results show the potential relevance for the s process

Published
2014

50. 238U(n, γ) reaction cross section measurement with C6D6 detectors at the n_TOF CERN facility

Author

Cortés Giraldo, Miguel Antonio, Praena Rodríguez, Javier, Quesada Molina, José Manuel, Sabaté Gilarte, Marta, Mingrone, F, Massimi, Christian, Vannini, Gianni, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Abstract

INPC 2013 – International Nuclear Physics Conference The radiative capture cross section of 238U is very important for the developing of new reactor technologies and the safety of existing ones. Here the preliminary results of the 238U(n,γ) cross section measurement performed at n_TOF with C6D6 scintillation detectors are presented, paying particular attention to data reduction and background subtraction

Published
2014

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