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7 results on '"M, Boromiza"'

1. Overview of the dissemination of n_TOF experimental data and resonance parameters

Author

E. Dupont, N. Otuka, D. Rochman, G. Nogèure, O. Aberle, V. Alcayne, S. Altieri, S. Amaducci, J. Andrzejewski, V. Babiano-Suarez, M. Bacak, J. Balibrea, C. Beltrami, S. Bennett, A.P. Bernardes, E. Berthoumieux, R. Beyer, M. Boromiza, D. Bosnar, M. Caamaño, F. Calviño, M. Calviani, D. Cano-Ott, A. Casanovas, F. Cerutti, G. Cescutti, E. Chiaveri, P. Colombetti, N. Colonna, P. Console Camprini, G. Cortés, M.A. Cortés-Giraldo, L. Cosentino, S. Cristallo, S. Dellmann, M. Di Castro, S. Di Maria, M. Diakaki, M. Dietz, C. Domingo-Pardo, R. Dressler, I. Durán, Z. Eleme, S. Fargier, B. Fernández, B. Fernández-Domínguez, P. Finocchiaro, S. Fiore, V. Furman, F. García-Infantes, A. Gawlik-Ramięga, G. Gervino, S. Gilardoni, E. González-Romero, C. Guerrero, F. Gunsing, C. Gustavino, J. Heyse, W. Hillman, G.D. Jenkins, E. Jericha, A. Junghans, Y. Kadi, K. Kaperoni, G. Kaur, A. Kimura, I. Knapová, M. Kokkoris, Y. Kopatch, M. Krtička, N. Kyritsis, I. Ladarescu, C. Lederer-Woods, J. Lerendegui-Marco, G. Lerner, A. Manna, T. Martínez, A. Masi, C. Massimi, P. Mastinu, M. Mastromarco, E.A. Maugeri, A. Mazzone, E. Mendoza, A. Mengoni, V. Michalopoulou, P.M. Milazzo, R. Mucciola, F. Murtas, E. Musacchio-Gonzalez, A. Musumarra, A. Negret, A. Pérez de Rada, P. Pérez-Maroto, N. Patronis, J.A. Pavón-Rodrgíuez, M.G. Pellegriti, J. Perkowski, C. Petrone, E. Pirovano, J. Plaza, S. Pomp, I. Porras, J. Praena, J.M. Quesada, R. Reifarth, Y. Romanets, C. Rubbia, A. Sánchez-Caballero, M. Sabaté-Gilarte, P. Schillebeeckx, D. Schumann, A. Sekhar, A.G. Smith, N.V. Sosnin, M.E. Stamati, A. Sturniolo, G. Tagliente, A. Tarifeño-Saldivia, D. Taríro, P. Torres-Sánchez, E. Vagena, S. Valenta, V. Variale, P. Vaz, G. Vecchio, D. Vescovi, V. Vlachoudis, R. Vlastou, A. Wallner, P.J. Woods, T. Wright, R. Zarrella, and P. Žugec

Subjects
General Medicine
Abstract

The n_TOF neutron time-of-flight facility at CERN is used for nuclear data measurements. The n_TOF Collaboration works closely with the Nuclear Reaction Data Centres (NRDC) network to disseminate the experimental data through the international EXFOR library. In addition, the Collaboration helps integrate the results in the evaluated library projects. The present contribution describes the dissemination status of n_TOF results, their impact on evaluated libraries and ongoing efforts to provide n_TOF resonance parameters in ENDF-6 format for further use by evaluation projects.

Published
2023

2. New equipment for neutron scattering cross-section measurements at GELINA

Author

M. Boromiza, Arjan Plompen, C. Borcea, E. Pirovano, A. Olacel, P. Dessagne, Markus Nyman, G. Henning, M. Kerveno, Alexandru Negret, Thomas Adam, European Commission - Joint Research Centre [Geel] (JRC), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), IFIN-HH, and Physikalisch-Technische Bundesanstalt [Braunschweig] (PTB)

Subjects
[PHYS]Physics [physics], Physics, Spectrometer, 010308 nuclear & particles physics, QC1-999, Electron, Neutron scattering, Inelastic scattering, Scintillator, 01 natural sciences, Inelastic neutron scattering, Nuclear physics, Cross section (physics), Angular distribution, 0103 physical sciences, 010306 general physics
Abstract

Two new experimental setups are being developed at European Commission’s Joint Research Centre in Geel, Belgium. The scintillator array ELISA (ELastic and Inelastic Scattering Array) is for high-quality neutron scattering cross section and angular distribution measurements. It has the capability to separate neutron-and photon-induced events via pulse-shape analysis. Inelastic scattering can also be resolved from the elastic channel. The ELISA setup and data analysis procedure were validated by performing measurements using carbon and iron samples. The DELCO spectrometer (Detection of ELectrons from COnversion) is intended for inelastic neutron scattering cross-section measurements in cases where the detection of γ rays is not feasible. The current status of DELCO, results from the first tests, and future prospects will be discussed.

Published
2020

3. What can we learn from (n,xnγ) cross sections about reaction mechanism and nuclear structure?

Author

P. Dessagne, P. Romain, Roberto Capote, M. Kerveno, Alexandra Negret, Eliot Party, Greg Henning, M. Boromiza, C. Borcea, A. Olacel, Stéphane Hilaire, Arjan Plompen, Markus Nyman, Marc Dupuis, M. Sin, Toshihiko Kawano, Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), IFIN-HH, International Atomic Energy Agency [Vienna] (IAEA), Theorical Division (LANL), Los Alamos National Laboratory (LANL), European Commission - Joint Research Centre [Geel] (JRC), University of Bucarest, and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Physics, Fissile material, 010308 nuclear & particles physics, Fission, QC1-999, Nuclear structure, Inelastic scattering, 01 natural sciences, Nuclear physics, Cross section (physics), Nuclear fission, 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics, Spectroscopy
Abstract

Inelastic (n,n') cross section is a key quantity to accurately simulate reactor cores, and its precision was shown to need significant improvements. To bypass the experimental difficulties to detect neutrons from (n,xn) reaction and to discriminate inelastically scattered neutrons from those following the fission process in case of fissile targets, an indirect but yet powerful method is used: the prompt γ-ray spectroscopy. Along this line, our collaboration has developed the GRAPhEME setup, optimized for actinides, at the GELINA facility to measure partial (n,xn γ) cross sections, from which the total (n,xn) cross section can be inferred. (n,xn γ) experiments with actinides are still particularly challenging, as their structure presents a high level density at low energy, and the competing neutron-induced fission reaction contaminates the γ-energy distribution. New precise measurements of the partial (n,xn γ) cross sections provide a stringent test to theoretical model and offer a way to improve them. This is a path to a better determination of the total inelastic scattering cross sections. In this contribution we discuss modeling aspects of the 238U and 182W (n,n' γ) reactions, also measured with GRAPhEME, using the three codes TALYS, EMPIRE and CoH. We will highlight the needed/expected improvements on reaction modeling and nuclear structure input.

Published
2020

4. GAINS: neutron inelastic cross section measurements of interest for applications and reaction studies

Author

A. J. M. Plompen, M. Boromiza, M. Kerveno, A. Olacel, P. Dessagne, A. Negret, C. Borcea, Markus Nyman, Gr. Henning, IFIN-HH, Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and European Commission - Joint Research Centre [Geel] (JRC)

Subjects
[PHYS]Physics [physics], Physics, Nuclear physics, Cross section (physics), 010308 nuclear & particles physics, QC1-999, 0103 physical sciences, Neutron, 010306 general physics, 7. Clean energy, 01 natural sciences
Abstract

International audience; The paper represents an overview of the measurements performed using GAINS at GELINA (JRC-Geel, Belgium). While undergoing continuous upgrades, the setup produced highly precise cross sections. Our measurements are primarily driven by technological needs with an emphasis on structural materials used in the development of nuclear facilities. However, most cases offered the opportunity to investigate various reaction mechanism and/or nuclear structure issues. We concentrate on several specific experiments describing the particular difficulties we met and the solutions we adopted to infer reliable data and to draw significant conclusions.

Published
2020

5. Shape transitions between and within Zr isotopes

Author

T. Beck, C. Sotty, Rares Suvaila, J. Wiederhold, A. Turturica, P. Koseoglou, C. Costache, R. Mărginean, L. Stan, M. Boromiza, W. Witt, S. Toma, R.E. Mihai, S. Pascu, C. R. Nita, C. Mihai, N. Marginean, V. Werner, I.E. Dinescu, C. Clisu, S. Ujeniuc, Norbert Pietralla, P.R. John, A. Mitu, Andreea Iren Serban, A. Ionescu, A. Olacel, and A. Negret

Subjects
Materials science, Isotope, Physics, QC1-999, Rapid onset, SHELL model, Isotopes of zirconium, Neutron, Experimental work, Ground state, Molecular physics, Excitation
Abstract

The Zirconium isotopes across the N=56,58 neutron sub­shell closures have been of special interest since years, sparked by the near doubly-magic features of 96Zr and the subsequent rapid onset of collectivity with a deformed ground-state structure already in 100Zr. Recent state-of-the-art shell model approaches did not only correctly describe this shape-phase transition in the Zr isotopic chain, but alsothe coexistence of non-collective structures and pronounced collectivity especially in 96,98Zr. Theisotope 98Zr is located on the transition from spherical to deformed ground state structures. We summarize recent experimental work to obtain the B(E2) excitation strengths of the first 2+ state of98Zr, including a new experiment employing the recoil-distance Doppler-shift method following a two-neutron transfer reaction.

Published
2019

6. Proton inelastic scattering cross section measurements on16O and28Si

Author

Grégoire. Henning, C. R. Nita, Arjan Plompen, N. Marginean, C. Mihai, L. Stan, A. Negret, T. Glodariu, C. Borcea, A. Turturica, Gabriel Turturica, D. Ghita, Markus Nyman, Rares Suvaila, Gabriel Suliman, A. Olacel, P. Dessagne, Christophe Sotty, M. Kerveno, M. Boromiza, Andreea Oprea, Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Horia Hulubei National Institute for Physics and Nuclear Engineering, Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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), European Commission - Joint Research Centre [Geel] (JRC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Physics, Proton, 010308 nuclear & particles physics, QC1-999, Nuclear Theory, Faraday cup, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Inelastic scattering, 7. Clean energy, 01 natural sciences, Charged particle, Nuclear physics, symbols.namesake, Cross section (physics), 0103 physical sciences, symbols, Neutron, Mirror nuclei, Nuclear Experiment, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Beam (structure)
Abstract

A (p, p′γ ) experiment was performed at the Tandem accelerator of IFIN-HH (Bucharest) with the purpose of measuring the proton inelastic cross-sections on 16 O and 28 Si. The goal was to investigate to which extent the neutron cross-sections on these nuclei can be inferred from those obtained with charged particles (i.e., protons). In doing so, we are trying to exploit the isospin symmetry by taking under consideration that the chosen targets are N = Z nuclei and, consequently, two mirror nuclei are formed in the (p ,p ′) and (n ,n ′) reactions. The experimental setup consisted of two HPGe detectors with 100% relative efficiency placed at 110∘ and 150∘ relative to the direction of the incident proton beam. The incident protons, which had energies ranging from 6 up to 17 MeV, were scattered on a thick quartz (SiO2 ) target. A Faraday cup was used to integrate the beam current, thus allowing an absolute determination of the γ production cross sections. We will briefly describe the data analysis procedure, the experimental particularities and difficulties and some preliminary results of the γ production cross sections for the most intense transitions both in 16 O and 28 Si.

Published
2017

7. Absolute cross sections of the86Sr(α,n)89Zr reaction at energies of astrophysical interest

Author

M. Boromiza, Lucian Stroe, Andreea Oprea, S. Pascu, L. Stan, A. Ionescu, R. Mărginean, D. Ghita, A. Olacel, S. Toma, Rares Suvaila, R.E. Mihai, T. Glodariu, Sorin Ujeniuc, C. R. Nita, C. Mihai, A. Mitu, Ioana Gheorghe, A. Turturica, Nicoleta Florea, D. Bucurescu, N. Marginean, A. Negret, D. M. Filipescu, C. Costache, C. Sotty, Irina Stiru, Irina Cata-Danil, and Andreea Iren Serban

Subjects
Physics, Tandem, 010308 nuclear & particles physics, QC1-999, chemistry.chemical_element, Germanium, 01 natural sciences, Nuclear physics, chemistry, 0103 physical sciences, Irradiation, Atomic physics, 010306 general physics
Abstract

Absolute cross sections for the 86 Sr(α,n)89 Zr reaction at energies close to the Gamow window are reported. Three thin SrF2 targets were irradiated using the 9 MV Tandem facility in IFIN-HH Bucharest that delivered α beams for the activation process. Two high-purity Germanium detectors were used to measure the induced activity of 89 Zr in a low background environment. The experimental results are in very good agreement with Hauser-Feshbach statistical model calculations performed with the TALYS code.

Published
2017

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