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208. Reaction dynamics studies for the system 7Be+58Ni.

Author

D Torresi, M. Mazzocco, L Acosta, A Boiano, C Boiano, A Diaz-Torres, N Fierro, T Glodariu, L Grilj, A Guglielmetti, N Keeley, M La Commara, I Martel, C Mazzocchi, P Molini, A Pakou, C Parascandolo, V V Parkar, N Patronis, and D Pierroutsakou

Published
2015
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209. The ASY-EOS experiment at GSI: Investigating the symmetry energy at supra-saturation densities

Author

Lunardi, S., Russotto, P., Chartier, M., Cozma, M. D., De Filippo, E., Le Fèvre, A., Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Li, Q., Łukasik, J., Marini, P., Pawłowski, P., Santoro, S., Trautmann, W., Veselsky, M., 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., Bassini, R., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Czech, B., Di Toro, M., Famiano, M., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, Riccardo, Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Lombardo, I., Lynch, W. G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, S., Pleskac, R., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente Dobon, J. J., 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), Russotto, P., Chartier, M., Filippo, E., Fèvre, A., Gannon, S., Gaparić, I., Ki, M., Kupny, S., Leifels, Y., Lemmon, R., Ukasik, J., Marini, P., Pagano, A., Pawowski, P., Santoro, S, Trautmann, W., Veselsky, M., 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., Chajecki, Z., Chbihi, A., Colonna, M., Cozma, D., Czech, B., Toro, M., Famiano, M., Geraci, E., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W., Matthews, Z., May, L., Minniti, T., Mostazo, M., Papa, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., B.A.Li and J.B.Natowitz, P., Russotto, M., Chartier, E., De Filippo, A., Le Fevre, S., Gannon, A., Ga??spari??, M., Ki??, S., Kupny, Y., Leifel, R., Lemmon, J., Lukasik, P., Marini, A., Pagano, P., Pawlowski, S., Santoro, W., Trautmann, M., Veselsky, 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, Z., Chajecki, A., Chbihi, M., Colonna, B., Czech, M., Di Toro, M., Famiano, E., Geraci, L., Grassi, V., Greco, C., Guazzoni, P., Guazzoni, M., Heil, L., Heilborn, R., Introzzi, T., Isobe, K., Kezzar, A., Krasznahorskay, N., Kurz, E., La Guidara, G., Lanzalone, P., Lasko, Q., Li, I., Lombardo, W. G., Lynch, Z., Matthew, L., May, T., Minniti, M., Mostazo, M., Papa, S., Pirrone, G., Politi, F., Porto, R., Reifarth, W., Reisdorf, F., Riccio, F., Rizzo, Rosato, Elio, D., Rossi, H., Simon, I., Skwirczynska, Z., Sosin, A., Trifirò, M., Trimarchi, M. B., Tsang, G., Verde, Vigilante, Mariano, A., Wieloch, P., Wigg, H. H., Wolter, P., Wu, S., Yennello, P., Zambon, L., Zetta, M., Zoric, Cozma, M., De Filippo, E., Le Fèvre, A., Gašparić, I., Kiš, M., Łukasik, J., Pawłowski, P., Santoro, S., Bassini, R., Di Toro, M., La Guidara, E., and Pleskac, R.

Subjects
Particle physics, History, QC1-999, Nuclear Theory, FOS: Physical sciences, and isobaric spin 24.10.Pa Thermal and statistical models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Education, Nuclear physics, Physics and Astronomy (all), nuclear physics, heavy-ions, symmetry energy, Au+Au collisions, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, ComputingMilieux_MISCELLANEOUS, Physics, sezele, Order (ring theory), Nuclear equation of state, Observable, 21.65.-f Nuclear matter 27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219 24.60.-k Statistical theory and fluctuations 25.75.Gz Particle correlations and fluctuations 21.10.Hw Spin, Symmetry (physics), Term (time), Computer Science Applications, parity, Nuclear reactions, Saturation (chemistry), Nucleon, Energy (signal processing)
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been 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 $^{197}$Au+$^{197}$Au 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., Comment: Talk given by P. Russotto at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

Published
2013
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210. Strong reaction channels for the system F-17+Ni-58 at Coulomb barrier energies

Author

Mazzocco, M., Signorini, C., Pierroutsakou, D., Glodariu, T., Boiano, A., Boiano, C., Farinon, F., Figuera, P., Filipescu, D., Fortunato, L., Guglielmetti, A., Inglima, G., La Commara, M., Lattuada, Marcello, Lotti, P., Mazzocchi, C., Molini, P., Musumarra, Agatino, Pakou, A., Parascandolo, C., Patronis, N., Romoli, M., Sandoli, M., Scuderi, V., Soramel, F., Stroe, L., Torresi, D., Vardaci, E., Vitturi, A., Iop, Gp, M., Mazzocco, C., Signorini, D., Pierroutsakou, T., Glodariu, A., Boiano, C., Boiano, F., Farinon, P., Figuera, D., Filipescu, L., Fortunato, A., Guglielmetti, G., Inglima, LA COMMARA, Marco, M., Lattuada, P., Lotti, C., Mazzocchi, P., Molini, A., Musumarra, A., Pakou, C., Parascandolo, N., Patroni, M., Romoli, M., Sandoli, V., Scuderi, F., Soramel, L., Stroe, D., Torresi, Vardaci, Emanuele, A., Vitturi, Jens Dilling, Inglima, Giovanni, and Sandoli, Mario

Subjects
Nuclear reaction, History, Interaction and reaction cross sections, Ion beam, Scattering, Chemistry, Coulomb excitation, Elastic and quasielastic scattering, Direct reaction, Coulomb barrier, Optical and diffraction model, Inelastic scattering, Computer Science Applications, Education, Cross section (physics), Reaction dynamics, Electric field, Atomic physics, Nuclear Experiment
Abstract

The reaction dynamics induced by the 17F Radioactive Ion Beam on the proton-shell closed 58Ni target was studied at two colliding energies slightly above the Coulomb barrier. Charged reaction products were detected at forward angles and the quasi-elastic differential cross section was analyzed within the framework of the optical model in order to extract the reaction cross section and to investigate the relevance of direct reaction channels (inelastic scattering, breakup and transfer) at near-barrier energies. The comparison with the reaction induced by double-magic tightly-bound 16O projectiles on the same target showed that the 17F reaction cross section is moderately enhanced at the lower secondary beam energy. Direct reaction channels were also found to be more relevant than for the corresponding 16O-induced reaction.

Published
2011

211. Does the breakup process affect the reaction dynamics for the systems17O,17F +58Ni at Coulomb barrier energies?

Author

Mazzocco, M., Signorini, C., Pierroutsakou, D., Glodariu, T., Boiano, A., Boiano, C., Castellani, L., Corti, D., De Rosa, A., Di Meo, P., Farinon, F., Figuera, P., Filipescu, D., Fortunato, L., Galet, G., Grebosz, J., Guglielmetti, A., Inglima, G., La Commara, M., Lattuada, Marcello, Lotti, P., Manea, C., Mazzocchi, C., Molini, P., Musumarra, Agatino, Nicoletto, M., Pakou, A., Parascandolo, C., Patronis, N., Romoli, M., Sandoli, M., Scuderi, V., Silvestri, R., Soramel, F., Stroe, L., Toniolo, N., Torresi, D., Vardaci, E., Vitturi, A., BE Schmitt CH, Navin, A, Rejmund, M, Lacroix, D, Goutte, H., Ch. Schmitt, A. Navin, M. Rejmund, D. Lacroix and H. Goutte, M., Mazzocco, C., Signorini, D., Pierroutsakou, T., Glodariu, A., Boiano, C., Boiano, L., Castellani, D., Corti, DE ROSA, Antonio, P., Di Meo, F., Farinon, P., Figuera, D., Filipescu, L., Fortunato, G., Galet, J., Grebosz, A., Guglielmetti, Inglima, Giovanni, LA COMMARA, Marco, M., Lattuada, P., Lotti, C., Manea, C., Mazzocchi, P., Molini, A., Musumarra, M., Nicoletto, A., Pakou, C., Parascandolo, N., Patroni, M., Romoli, Sandoli, Mario, V., Scuderi, R., Silvestri, F., Soramel, L., Stroe, N., Toniolo, D., Torresi, Vardaci, Emanuele, and A., Vitturi

Subjects
Physics, Proton, Scattering, QC1-999, Nuclear Theory, Binding energy, Coulomb barrier, breakup, Breakup, Cross section (physics), Reaction dynamics, weakly bound nuclei, Atomic physics, radioactive ion beams, Nuclear Experiment, Open shell
Abstract

The scattering processes of two mirror projectiles, the well bound 17 O (Sn = 4.143 MeV) and the loosely bound radioactive 17 F (Sp = 0.600 MeV), on the proton closed shell target 58 Ni were measured at several energies around the Coulomb barrier. The experimental data were analyzed within the framework of the optical model to extract the reaction cross section and to investigate the role played by direct reaction channels at near-barrier energies. The comparison shows a similar behaviour for the two A = 17 projectiles despite their very different binding energies and suggests a rather small effect of the 17 F breakup channel on the reaction dynamics.

Published
2011

212. Reaction dynamics for the system 17F+58Ni at near-barrier energies

Author

Mazzocco, M., Signorini, C., Pierroutsakou, D., Glodariu, T., Boiano, A., Boiano, C., Farinon, F., Figuera, P., Filipescu, D., Fortunato, L., Guglielmetti, A., Inglima, G., La Commara, M., Lattuada, Marcello, Lotti, P., Mazzocchi, C., Molini, P., Musumarra, Agatino, Pakou, A., Parascandolo, C., Patronis, N., Romoli, M., Sandoli, M., Scuderi, V., Soramel, F., Stroe, L., Torresi, D., Vardaci, E., Vitturi, A., M., Mazzocco, C., Signorini, D., Pierroutsakou, T., Glodariu, A., Boiano, C., Boiano, F., Farinon, P., Figuera, D., Filipescu, L., Fortunato, A., Guglielmetti, Inglima, Giovanni, LA COMMARA, Marco, M., Lattuada, P., Lotti, C., Mazzocchi, P., Molini, A., Musumarra, A., Pakou, C., Parascandolo, N., Patroni, M., Romoli, Sandoli, Mario, V., Scuderi, F., Soramel, L., Stroe, D., Torresi, Vardaci, Emanuele, and A., Vitturi

Subjects
radioactive ion-beams, reaction channels, fusion, probability, near barrier energy, f-17, halo, line, breakup, coulomb barrier, weakly-bound nuclei
Abstract

Charged reaction products originated from the interaction of the loosely bound radioactive ion beam (17)F (S(p) = 600 keV) with the proton-shell closed (58)Ni target were measured at two colliding energies slightly above the Coulomb barrier. The collected data were analyzed within the framework of the optical model to deduce the reaction cross section and to investigate the role played by inelastic excitations, transfer channels, and the breakup process (17)F --> (16)O + p at near-barrier energies. The reaction cross section at the lower (17)F energy showed a moderate enhancement (similar to 20%) with respect to that of the system (16)O + (58)Ni. At this energy direct reaction channels were also found to be more relevant than those for the reaction induced from the tightly bound projectile (16)O on the same target. Both features could be strongly related to the very low binding energy of the (17)F valence proton. Physical Review C

Published
2010

213. Isotopic dependence of the nuclear caloric curve.

Author

Sfienti C, Adrich P, Aumann T, Bacri CO, Barczyk T, Bassini R, Bianchin S, Boiano C, Botvina AS, Boudard A, Brzychczyk J, Chbihi A, Cibor J, Czech B, De Napoli M, Ducret JE, Emling H, Frankland JD, Hellström M, Henzlova D, Immè G, Iori I, Johansson H, Kezzar K, Lafriakh A, Le Fèvre A, Le Gentil E, Leifels Y, Lühning J, Lukasik J, Lynch WG, Lynen U, Majka Z, Mocko M, Müller WF, Mykulyak A, Orth H, Otte AN, Palit R, Pawłowski P, Pullia A, Raciti G, Rapisarda E, Sann H, Schwarz C, Simon H, Sümmerer K, Trautmann W, Tsang MB, Verde G, Volant C, Wallace M, Weick H, Wiechula J, Wieloch A, and Zwiegliński B

Abstract

The A/Z dependence of projectile fragmentation at relativistic energies has been studied with the ALADIN forward spectrometer at SIS. A stable beam of (124)Sn and radioactive beams of (124)La and (107)Sn at 600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemical freeze-out temperatures are found to be nearly invariant with respect to the A/Z of the produced spectator sources, consistent with predictions for expanded systems. Small Coulomb effects (DeltaT approximately 0.6 MeV) appear for residue production near the onset of multifragmentation.

Published
2009
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