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1. Study of two- and multi-particle correlations in 12C+24Mg and 12C+208Pb reactions at E=35 AMeV

Author

Ismael Martel, A. Chbihi, P. Russotto, B. Gnoffo, D. Dell'Aquila, Lucrezia Auditore, Triestino Minniti, A. Trifirò, L. Quattrocchi, G. Politi, F. Amorini, Luis Acosta, F. Rizzo, M. Trimarchi, S. Norella, F. Porto, A. Anzalone, Giuseppe Verde, A. Grzeszczuk, S. Pirrone, Martin Veselsky, L. Francalanza, E. V. Pagano, G. Cardella, I. Berceanu, Elio Rosato, Ivano Lombardo, A. Pagano, E. De Filippo, Michele Papa, Mariano Vigilante, G. Lanzalone, Dip. Fisica, Università di Messina, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), V. Greco, M. La Cognata, S. Pirrone, F. Rizzo, C. Spitaleri, Greco, V., Quattrocchi, L., Acosta, L., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cardella, G., Chbihi, A., De Filippo, E., Dell'Aquila, D., Francalanza, L., Gnoffo, B., Grzeszczuk, A., Lanzalone, G., Lombardo, I., Martel, I., Minniti, T., Norella, S., Pagano, A., Pagano, E. V., Papa, M., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Rosato, E., Russotto, P., Trifirò, A., Trimarchi, M., Verde, G., Veselsky, M., Vigilante, M., and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, VII. Equation of State of Neutron-Rich Nuclear Matter, Clusters in Nuclei and Nuclear, Isotope, QC1-999, Alpha particle, Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 010305 fluids & plasmas, Nuclear physics, Physics and Astronomy (all), Excited state, 0103 physical sciences, Nuclear Thermodynamics, Heavy ion collisions, Isospin, Particle, Invariant mass, 010306 general physics, Spectroscopy, Nuclear Experiment
Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.ISBN: 978-88-7438-101-2; International audience; Two and multi particle correlations from the decay of sources produced in 12C+24Mg and 12C+208Pb collisions at E=35 AMeV have been studied by using the forward part (1° < θlab < 30°) of the CHIMERA multi-detector. Correlations and invariant mass spectroscopy are used to explore simultaneous and sequential decays of resonances in light isotopes with Z∼3-6, produced in peripheral collisions via the break-up of excited quasi-projectiles. Among them we mention 5Li, 6Li, 6Be, 8Be and the astrophysically important state in 12C decaying into three alpha particles. Results and future perspectives at the INFN-LNS will be presented.

Published
2016

2. A new method for the determination of very small Γγ partial widths

Author

G. Lanzalone, P. Russotto, B. Fornal, E. V. Pagano, G. Cardella, Angelo Pagano, Luis Acosta, Saverio De Luca, M. Papa, Nicla Gelli, Enrico De Filippo, S. Pirrone, A. Nannini, Antonio Trifiro, Lucia Quattrocchi, F. Rizzo, Francisco Favela, Concetta Maiolino, Sebastianella Norella, Domenico Santonocito, A. Camaiani, F. Porto, N. S. Martorana, S. Leoni, Lucrezia Auditore, Giuseppe Politi, B. Gnoffo, and Marina Trimarchi

Subjects
Physics, Partial width, 010308 nuclear & particles physics, QC1-999, Detector, Residual, 01 natural sciences, Nuclear physics, Physics and Astronomy (all), medicine.anatomical_structure, 0103 physical sciences, medicine, 010306 general physics, Nucleus, Beam (structure)
Abstract

We present a new method for the measurement of very small Γ γ partial width that is important for the synthesis of elements in astrophysics. The method is based on the simultaneous detection of scattered beam, residual nucleus and decay γ rays. This method is optimized for the use of the CHIMERA detector at LNS. Experimental details are described.

Published
2017

3. ASY-EOS experiment at GSI

Author

S. Pirrone, Riccardo Introzzi, D. Loria, J. Brzychczyk, F. Amorini, Chiara Guazzoni, Marielle Chartier, Triestino Minniti, M. Trimarchi, A. Budzanowski, H. H. Wolter, L. W. May, M. Di Toro, M. Al-Garawi, M. Zoric, B. Tsang, B. Czech, L. Grassi, Z. Chajecki, E. La Guidara, C. Boisjoli, P. Z. Wu, Matthias Heil, Rene Reifarth, G. Politi, Yassid Ayyad, Martin Veselsky, K. Boretzky, Paola Marini, G. Cardella, F. Porto, P. Guazzoni, F. Riccio, Michael Famiano, J. Lukasik, Maria Colonna, Vincenzo Greco, Yvonne Leifels, A. Gašsparić, A. Trifirò, E. Geraci, I. Skwirczyńska, W. Reisdorf, L. Acosta, P. Zambon, A. Le Fèvre, Lauren Heilborn, Michele Papa, M. Adamczyk, Lucrezia Auditore, P. Cammarata, Thomas Aumann, Mihai Petrovici, Z. Basrak, A. Chbihi, Ivano Lombardo, Piotr Pawłowski, S. Cavallaro, Z. Matthews, M. Mostazo, P. Russotto, J. Wilczyński, S. Santoro, P. Lasko, Tadaaki Isobe, F. Rizzo, V. Baran, D. M. Rossi, Zbigniew Sosin, Qingfeng Li, Mariano Vigilante, W. Trautmann, G. Lanzalone, W. G. Lynch, M. Kiš, J. Benlliure, Elio Rosato, S. Al-Homaidhi, C. Boiano, A. Wieloch, Angelo Pagano, E. De Filippo, Abdulrahman Alajlan, Roy Crawford Lemmon, S. Kupny, Sherry Yennello, N. Kurz, L. Zetta, Herbert A. Simon, P. Wigg, K. Kezzar, Giuseppe Verde, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), J.D Frankland, A. Pagano, S. Pirrone, M.-F Rivet, F. Rizzo, J.D.Frankland, A.Pagano, S.Pirrone, m.F.Rivet, F.Rizzo, P., Russotto, L., Acosta, M., Adamczyk, A., Al Ajlan, M., Al Garawi, S., Al Homaidhi, F., Amorini, L., Auditore, T., Aumann, Y., Ayyad, V., Baran, Z., Basrak, J., Benlliure, C., Boiano, C., Boisjoli, K., Boretzky, J., Brzychczyk, A., Budzanowski, G., Cardella, P., Cammarata, S., Cavallaro, Z., Chajecki, M., Chartier, A., Chbihi, M., Colonna, B., Czech, E., De Filippo, M., Di Toro, M., Famiano, A., Le Fevre, A., Ga??spari??, E., Geraci, L., Grassi, V., Greco, C., Guazzoni, P., Guazzoni, M., Heil, L., Heilborn, R., Introzzi, T., Isobe, K., Kezzar, M., Ki??, S., Kupny, N., Kurz, E., La Guidara, G., Lanzalone, P., Lasko, Y., Leifel, R., Lemmon, Q., Li, Lombardo, Ivano, D., Loria, J., Lukasik, W. G., Lynch, P., Marini, Z., Matthew, L., May, T., Minniti, M., Mostazo, A., Pagano, M., Papa, P., Pawlowski, M., Petrovici, S., Pirrone, G., Politi, F., Porto, R., Reifarth, W., Reisdorf, F., Riccio, F., Rizzo, Rosato, Elio, D., Rossi, S., Santoro, H., Simon, I., Skwirczynska, Z., Sosin, W., Trautmann, A., Trifirò, M., Trimarchi, B., Tsang, M., Veselsky, G., Verde, Vigilante, Mariano, A., Wieloch, P., Wigg, J., Wilczynski, H. H., Wolter, P., Wu, S., Yennello, P., Zambon, L., Zetta, M., Zoric, Russotto, P., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Cavallaro, S., Chajecki, Z., Chartier, M., Chbihi, A., Colonna, M., Czech, B., De Filippo, E., Di Toro, M., Famiano, M., Le Fevre, A., Gašparić, I., Geraci, E., Grassi, L., Greco, V., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Kiš, M., Kupny, S., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Leifels, Y., Lemmon, R., Li, Q., Lombardo, I., Loria, D., Lukasik, J., Lynch, W., Marini, P., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pawlowski, P., Petrovici, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Santoro, S., Simon, H., Skwirczynska, I., Sosin, Z., Trautmann, W., Trifirò, A., Trimarchi, M., Tsang, B., Veselsky, M., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wilczynski, J., Wolter, H., Wu, P., Yennello, S., Zambon, P., Zetta, L., and Zoric, M.

Subjects
Physics, sezele, QC1-999, Nuclear Theory, symmetry energy, Observable, Nuclear equation of state, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nuclear equation of state, Symmetry (physics), Term (time), Nuclear physics, Physics and Astronomy (all), nucleus-nucleus collisions, Neutron, Nucleon, Nuclear Experiment
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich Heavy-Ion at intermediate energies has been recently proposed as an observable sensitive to the strength of the symmetry term in the nuclear equation of state (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011. © Owned by the authors, 2012.

Published
2012

4. Transfer reactions on light exotic nuclei studied with CHIMERA detector at LNS

Author

G. Cardella, L. Acosta, F. Amorini, L. Auditore, I. Berceanu, M. Buscemi, M. B. Chatterjiee, E. DeFilippo, L. Francalanza, R. Gianì, L. Grassi, E. La Guidara, G. Lanzalone, D. Loria, T. Minniti, A. Pagano, E. V. Pagano, M. Papa, S. Pirrone, G. Politi, A. Pop, F. Porto, F. Rizzo, P. Russotto, S. Santoro, A. Trifiró, M. Trimarchi, G. Verde, LOMBARDO, IVANO, ROSATO, ELIO, VIGILANTE, MARIANO, S. Lunardi, P.G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, J.J. Valiente-Dobon, G., Cardella, L., Acosta, F., Amorini, L., Auditore, I., Berceanu, M., Buscemi, M. B., Chatterjiee, E., Defilippo, L., Francalanza, R., Gianì, L., Grassi, E., La Guidara, G., Lanzalone, Lombardo, Ivano, D., Loria, T., Minniti, A., Pagano, E. V., Pagano, M., Papa, S., Pirrone, G., Politi, A., Pop, F., Porto, F., Rizzo, Rosato, Elio, P., Russotto, S., Santoro, A., Trifiró, M., Trimarchi, G., Verde, Vigilante, Mariano, Cardella, G., Acosta, L., Amorini, F., Auditore, L., Berceanu, I., Chatterjiee, M., Defilippo, E., Francalanza, L., Gianì, R., Grassi, L., La Guidara, E., Lanzalone, G., Lombardo, I., Loria, D., Minniti, T., Pagano, A., Pagano, E., Papa, M., Pirrone, S., Politi, G., Pop, A., Porto, F., Rizzo, F., Rosato, E., Russotto, P., Santoro, S., Trifirò, A., Trimarchi, M., Verde, G., and Vigilante, M.

Subjects
Physics, Elastic scattering, education.field_of_study, QC1-999, Population, Resolution (electron density), Nuclear reaction, Coincidence, Spectral line, Physics and Astronomy (all), Transfer reactions, Excited state, Center of mass, Atomic physics, education, Beam (structure)
Abstract

The kinematical coincidence method is used to extract angular distribution of elastic scattering and transfer reactions. The detected light particle energy spectra are used to extract the angular distribution with around 1° resolution in the Center of Mass (CM) system. Examples with 10Be beam are presented. In the case of proton scattering, γ-ray coincidences are used to discriminate excited levels population from elastic scattering. © Owned by the authors, published by EDP Sciences, 2014.

Published
2014

5. Exploring reaction mechanisms and their competition in 58Ni+48Ca collisions at E = 25 AMeV

Author

F. Rizzo, Luca Morelli, P. Russotto, E. Geraci, V. L. Kravchuk, G. Lanzalone, Maria Colonna, Sandro Barlini, F. Gramegna, M. Bruno, A. Pagano, R. Bougault, F. Porto, Giovanni Casini, G. Vannini, Maurizio Bini, S. Pirrone, E. La Guidara, U. Abbondanno, Silvia Piantelli, L. Vannucci, G. Politi, L. Francalanza, Paola Marini, J. De Sanctis, M. D'Agostino, A. Giussani, E. De Filippo, G. Cardella, F. Amorini, N. Le Neindre, Alessandro Olmi, Michele Papa, Giacomo Poggi, C. Maiolino, B. Guiot, Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Dipartimento di Energia [Milano] (DENG), and Politecnico di Milano [Milan] (POLIMI)

Subjects
Physics, Reaction mechanism, Photon, 010308 nuclear & particles physics, QC1-999, Observable, Position and momentum space, Fermi energy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, 0103 physical sciences, Tensor, Statistical physics, 010306 general physics, Nuclear Experiment, Event (particle physics), Eigenvalues and eigenvectors
Abstract

OPEN ACCESS; International audience; Latest results concerning the study of central collisions in 58Ni+48Ca reactions at Elab(Ni)=25 AMeV are presented. The experimental data, collected with the CHIMERA 4π device, have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain. The method adopted to perform the centrality selection refers to the global variable "flow angle", that is related to the event shape in momentum space, as it is determined by the eigenvectors of the experimental kinetic-energy tensor. The main features of the reaction products were explored by using different constraints on some of the relevant observables, such as mass and velocity distributions and their correlations. Much emphasis was devoted to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a prompt multifragmentation mechanism. The reaction mechanism was simulated in the framework of transport theories (dynamical stochastic BNV calculations, followed by sequential SIMON code) and further comparison with dynamical calculations from transport model (QMD, CoMD) are in progress. Moreover, an extension of this study taking into account for the light particles has been envisaged.

Published
2014

6. Using CHIMERA detector at LNS for gamma-particle coincidences

Author

Giuseppe Verde, Chiara Guazzoni, S. Pirrone, M. Trimarchi, D. Dell'Aquila, Lucrezia Auditore, L. Quattrocchi, S. Norella, Andrea Castoldi, F. Rizzo, Mariano Vigilante, G. Politi, G. Cardella, A. Pagano, G. Lanzalone, E. V. Pagano, S. De Luca, Michele Papa, Luis Acosta, Ivano Lombardo, E. De Filippo, N. S. Martorana, L. Francalanza, P. Russotto, A. Trifirò, M.B. Chatterjiee, B. Gnoffo, Greco, V., Cardella, G., Acosta, L., Auditore, L., Chatterjiee, M. B., Castoldi, A., De Filippo, E., Dell'Aquila, D., De Luca, S., Gnoffo, B., Guazzoni, C., Francalanza, L., Lanzalone, G., Lombardo, I., Martorana, N., Norella, S., Pagano, A., Pagano, E. V., Papa, M., Pirrone, S., Politi, G., Quattrocchi, L., Rizzo, F., Russotto, P., Trifirò, A., Trimarchi, M., Verde, G., and Vigilante, M.

Subjects
Physics, Nuclear physics detectors, gamma ray detection, sezele, QC1-999, Hadron, Carbon-12, Gamma ray, Charged particle, Nuclear physics, Baryon, Physics and Astronomy (all), Neutron, Spin-flip, Atomic physics, Nucleon
Abstract

We have recently evaluated the quality of γ -ray angular distributions that can be extracted in particle-gamma coincidence measurements using the CHIMERA detector at LNS. γ -rays have been detected using the CsI(Tl) detectors of the spherical part of the CHIMERA array. Very clean γ -rays angular distributions were extracted in reactions induced by different stable beams impinging on 12 C thin targets. The results evidenced an effect of projectile spin flip on the γ -rays angular distributions. γ -particle coincidence measurements were also performed in reactions induced by neutron rich exotic beams produced through in-flight fragmentation at LNS. In recent experiments also the Farcos array was used to improve energy and angular resolution measurements of the detected charged particles. Results obtained with both stable and radioactive beams are reported.

Published
2016

7. Preface

Author

J.D Frankland, A. Pagano, S. Pirrone, M.-F Rivet, and F. Rizzo

Subjects
Physics, QC1-999
Published
2012

8. Polar-side emission of heavy IMFs in197Au +197Au collisions at 23A MeV

Author

G. Cardella, Ji-Youn Han, Giuseppe Verde, L. Grassi, E. De Filippo, G. Lanzalone, S. Pirrone, Michele Papa, R. Najman, E. Piasecki, K. Siwek-Wilczyńska, A. Grzeszczuk, W. Zipper, Jacek R. Wilczyński, P. Russotto, Lucrezia Auditore, G. Politi, F. Rizzo, F. Amorini, E. La Guidara, Tomasz Kozik, E. Geraci, R. Płaneta, I. Skwira-Chalot, N. G. Nicolis, T. Cap, Antonio Trifiro, A. Pagano, M. Trimarchi, and Ivano Lombardo

Subjects
Physics, Nuclear physics, QC1-999, Polar, Nuclear Experiment
Abstract

T. Cap1∗, K. Siwek-Wilczynska1, I. Skwira-Chalot1, J. Wilczynski2, F. Amorini3,4, L. Auditore5, G. Cardella6, E. De Filippo6, E. Geraci4,6, L. Grassi4,6, A. Grzeszczuk7, E. La Guidara8, J. Han3, T. Kozik9, G. Lanzalone3,10, I. Lombardo11, R. Najman9, N. G. Nicolis12, A. Pagano6, M. Papa6, E. Piasecki2,13, S. Pirrone6, R. P laneta9, G. Politi4,6, F. Rizzo3,4, P. Russotto3,4, A. Trifiro5, M. Trimarchi5, G. Verde6 and W. Zipper7

Published
2015

9. The InKiIsSY experiment at LNS: A study of size vs. isospin effects with124Xe+64Zn and124,112Sn+64,58Ni reactions

Author

E. Piasecki, S. Norella, T. Cap, Antonio Trifiro, L. Quattrocchi, E. Morgana, G. Lanzalone, E. V. Pagano, E. Geraci, J. Wilczyński, F. Porto, A. Pagano, M. Trimarchi, Giuseppe Verde, S. Pirrone, Triestino Minniti, L. Francalanza, L. Acosta, I. Lombardo, P. Russotto, Michele Papa, E. De Filippo, Maria Colonna, F. Rizzo, M. Vigilante, E. Rosato, B. Gnoffo, V. Baran, C. Maiolino, Lucrezia Auditore, G. Politi, G. Cardella, G. Marquínez-Durán, Borderie, B., Quattrocchi, L., Acosta, L., Auditore, L., Baran, V., Cap, T., Cardella, G., Colonna, M., De Filippo, E., Francalanza, L., Geraci, E., Gnoffo, B., Lanzalone, G., Lombardo, I., Maiolino, C., Marquínez-Duŕan, G., Morgana, E., Minniti, T., Norella, S., Pagano, A., Pagano, E. V., Papa, M., Piasecki, E., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Rosato, E., Russotto, P., Trifiro, A., Trimarchi, M., Verde, G., Vigilante, M., and Wilczynski, J.

Subjects
Physics, Nuclear physics, Physics and Astronomy (all), Reaction dynamics, QC1-999, Isospin, Nuclear equation of state, Statistical physics, Beam energy, Symmetry (physics)
Abstract

The systems 124 Sn+64 Ni and 112 Sn+58 Ni at 35 AMeV were analyzed in previous experiments, by using the 4π multi-detector CHIMERA in order to investigate the time-scale and mechanisms of fragments formation. By comparing the two systems, effects that have been correlated to Isospin transport in reaction dynamics and symmetry energy term of nuclear equation of state at sub-saturation density were found. Recently, in order to disentangle the Isospin effects from size effects the 124 Xe+64 Ni reaction was investigated at the same beam energy of 35 AMeV.

Published
2015

10. N/Z effects on40,48Ca+40,48Ca reactions at 25 MeV/nucleon

Author

G. Giuliani, P. Russotto, Elio Rosato, M. B. Chatterjee, E. LaGuidara, C. Agodi, Ji-Youn Han, A. Anzalone, Triestino Minniti, L. Acosta, E. Geraci, E. DeFilippo, F. Porto, S. Cavallaro, Giuseppe Verde, A. Pagano, F. Rizzo, S. Pirrone, Mariano Vigilante, L. Grassi, I. Berceanu, C. Maiolino, G. Lanzalone, Ivano Lombardo, Antonio Trifiro, D. Loria, M. Trimarchi, Michele Papa, F. Amorini, G. Cardella, Lucrezia Auditore, G. Politi, S. Santoro, M. Buscemi, Lombardo, I., Acosta, L., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Buscemi, M., Cardella, G., Cavallaro, S., Chatterjee, M., Defilippo, E., Giuliani, G., Geraci, E., Grassi, L., Han, J., Laguidara, E., Lanzalone, G., Loria, D., Maiolino, C., Minniti, T., Pagano, A., Papa, M., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Rosato, E., Russotto, P., Santoro, S., Trifirò, A., Trimarchi, M., Verde, G., Vigilante, M., J.D.Frankland, A.Pagano, S.Pirrone, m.F.Rivet, F.Rizzo, Lombardo, Ivano, L., Acosta, C., Agodi, F., Amorini, A., Anzalone, L., Auditore, I., Berceanu, M., Buscemi, G., Cardella, S., Cavallaro, M. B., Chatterjee, E., Defilippo, G., Giuliani, E., Geraci, L., Grassi, J., Han, E., Laguidara, G., Lanzalone, D., Loria, C., Maiolino, T., Minniti, A., Pagano, M., Papa, S., Pirrone, G., Politi, F., Porto, F., Rizzo, Rosato, Elio, P., Russotto, S., Santoro, A., Trifirò, M., Trimarchi, G., Verde, and Vigilante, Mariano

Subjects
Physics, Proton, QC1-999, Nuclear Theory, nuclear reaction, Nuclear physics, Physics and Astronomy (all), Isospin, isospin effect, Isobaric process, even-odd staggering, Neutron, Heavy ion, Statistical physics, Diffusion (business), Nuclear Experiment, Nucleon, Event (particle physics)
Abstract

Effects related to the neutron to proton ratio (N/Z) degree of freedom in 40, 48Ca+40, 48Ca reactions at 25 MeV/nucleon have been investigated. Isotopic effect and even-odd staggering characterize the emission of light fragments at forward angles. The study of isobaric ratio 7Li/7Be for quasi-projectile source in semi-peripheral event of reactions allows moreover to investigate isospin diffusion effects in heavy ion collisions. © Owned by the authors, 2012.

Published
2012

11. Investigation of the disappearance of collective motion in nuclei of mass A~120-130

Author

Domenico Santonocito, N. Frascaria, U. Emanuele, G. Cardella, F. Rizzo, F. Delaunay, G. Bellia, Lucrezia Auditore, E. Migneco, D. Wang, A. Del Zoppo, J.A. Scarpaci, S. Pirrone, R. Coniglione, C. Maiolino, C. Monrozeau, Paolo Sapienza, F. Hongmei, F. Amorini, C. Agodi, R. Alba, Michele Papa, M. Trimarchi, Y. Blumenfeld, Antonio Trifiro, V. Lima, P. Piattelli, Paolo Finocchiaro, and E. De Filippo

Subjects
Physics, Range (particle radiation), QC1-999, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Resonance (particle physics), Spectral line, Nuclear physics, Time of flight, Dipole, Nuclear fusion, Multiplicity (chemistry), Atomic physics, Nuclear Experiment, Excitation
Abstract

A study of hot Giant Dipole Resonance (GDR) in nuclei of mass A=120130 in an excitation energy range from 150 to 330 MeV, where the GDR quenching is expected to arise, has been undertaken using the MEDEA multi-detector system. Hot nuclei were populated using complete and incomplete fusion reactions. The characterization of hot system was performed through the study of residue time of flight combined with the analysis of light charged energy spectra detected in coincidence. Gamma-ray energy spectra show an evolution of the GDR main features both in terms of width and multiplicity. Evidences of a saturation of gamma multiplicity appear at high excitation energy at variance with predictions of statistical model calculations. Gamma- ray energy spectra can been reproduced in a phenomenological way introducing in the statistical model a sharp suppression of the gamma-ray emission above E* = 240 MeV. A comparison of experimental data to models describing the GDR disappearance will be presented.

Published
2014

12. The performance of AGATA: From the LNL demonstrator to the GANIL setup

Author

C. Michelagnoli, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), V. Greco, M. La Cognata, S. Pirrone, F. Rizzo, C. Spitaleri, and AGATA

Subjects
010308 nuclear & particles physics, Physics, QC1-999, 0103 physical sciences, Systems engineering, X. New Facilities and Detectors, AGATA, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences, Engineering physics
Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.ISBN: 978-88-7438-101-2; International audience; The performance of the Advanced–GAmma–Tracking–Array AGATA is demonstrated through selected examples from the different recent experimental campaigns.

Published
2016

13. Dissipative effects in fission investigated with proton-on-lead reactions

Author

Andreas Martin Heinz, Enrique Casarejos, J. L. Rodriguez-Sanchez, Herbert A. Simon, J. F. Martin, Yassid Ayyad, D. Ramos, A. Kelic-Heil, H. Alvarez-Pol, C. Paradela, J. Benlliure, L. Audouin, D. M. Rossi, E. Pellereau, J. Taieb, C. Rodriguez-Tajes, Bernd Voss, B. Pietras, T. Gorbinet, G. Belier, J. Vargas, D. Cortina-Gil, B. Laurent, A. Chatillon, G. Boutoux, 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), V. Greco, M. La Cognata, S. Pirrone, F. Rizzo, C. Spitaleri, and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, Angular momentum, Proton, Mass distribution, VIII. Fusion and Fission, 010308 nuclear & particles physics, Fission, QC1-999, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, 0103 physical sciences, Dissipative system, Neutron, Spallation, Atomic number, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

The complete kinematic measurement of the two fission fragments permitted us to investigate dissipative effects at large deformations, between the saddle-point and the corresponding scission configurations. Up to now, this kind of study has only been performed with fusionfission reactions using a limited number of observables, such as the mass distribution of the fission fragments or the neutron multiplicities. However, the large angular momenta gained by the compound nucleus could affect the conclusions drawn from such experiments. In this work, the use of spallation reactions, where the fissioning systems are produced with low angular momentum, small deformations and high excitation energies, favors the study of dissipation, and allowed us to define new observables, such as postscission neutron multiplicities and the neutron excess of the final fission fragments as a function of the atomic number of the fissioning system. These new observables are used to investigate the dissipation at large deformations.

Published
2016

14. Recent experiments in inverse kinematics with the magnetic spectrometer PRISMA

Author

G. Montagnoli, E. Fioretto, Suzana Szilner, L. Corradi, J. J. Valiente-Dobón, C. Michelagnoli, Alain Goasduff, D. Montanari, F. Galtarossa, S. Courtin, T. Mijatović, F. Scarlassara, F. Haas, G. Pollarolo, Dieter Ackermann, D. Jelavić-Malenica, A. M. Stefanini, C. A. Ur, Neven Soić, 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), CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), V. Greco, M. La Cognata, S. Pirrone, F. Rizzo, C. Spitaleri, 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 Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, education.field_of_study, Inverse kinematics, Spectrometer, 010308 nuclear & particles physics, Fission, QC1-999, Population, Coulomb barrier, I. Heavy and Superheavy Elements, Ranging, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Deep inelastic scattering, 01 natural sciences, transfer reactions, spectrometers, Nuclear physics, Physics and Astronomy (all), 0103 physical sciences, Neutron, Nuclear Experiment, 010306 general physics, education
Abstract

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.ISBN: 978-88-7438-101-2; International audience; In the last period, two classes of experiments have been carried outwith the large acceptance magnetic spectrometer PRISMA. In particular,the one- and two-neutron transfer processes at energies rangingfrom the Coulomb barrier to deep below it and the population of exoticneutron rich nuclei in the A∼130 and A∼200 mass regions have beenstudied. Both kinds of experiments have been performed in inversekinematics identifying in A, Z and velocity the light target-like recoilswith PRISMA placed at very forward angles in order to have, at thesame time, high efficiency and good energy and mass resolutions.

Published
2016

15. Influence of the N/Z degree of freedom on the decay modes of excited nuclear complex formed in Kr+Ca reactions at 5.5 AMeV

Author

J.-P. Wieleczko, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), J.D Frankland, A. Pagano, S. Pirrone, M.-F Rivet, and F. Rizzo

Subjects
Physics, Angular momentum, QC1-999, Degrees of freedom (statistics), Context (language use), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, Nuclear physics, Excited state, Dissipative system, Neutron, Statistical physics, Nuclear Experiment, Excitation
Abstract

Expérience GANIL/INDRA; International audience; The N/Z degree of freedom is expected to play a crucial role in the decay modes of excited nuclei and in the competition between strongly dissipative and fusion mechanisms. In this contribution we present results obtained in 78,82Kr+40Ca reactions at 5.5 AMeV using the INDRA detector at GANIL. Discussion will be dedicated to various characteristics of the production of light fragments as for example, kinetic energy distributions, odd-even staggering of the cross-sections and excitation energy stored in fragments. These observables seem to reflect the interplay between the N/Z and angular momentum degrees of freedom at the separation phase. The set of data provides some hints for further explorations in the context of reaction with neutron rich projectile to be delivered in a near future.

Published
2012

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