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29 results on '"Geraci E"'

1. Production of $\alpha$-particle condensate states in heavy-ion collisions

Author

Raduta, Ad. R., Borderie, B., Geraci, E., Neindre, N. Le, Napolitani, P., Rivet, M. F., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., De Filippo, E., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Lopez, O., Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., and Wieleczko, J. P.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction $^{40}Ca$ + $^{12}C$ at 25 MeV/nucleon was used to produce excited states candidates to $\alpha$-particle condensation. The experiment was performed at LNS-Catania using the CHIMERA multidetector. Accepting the emission simultaneity and equality among the $\alpha$-particle kinetic energies as experimental criteria for deciding in favor of the condensate nature of an excited state, we analyze the $0_2^+$ and $2_2^+$ states of $^{12}$C and the $0_6^+$ state of $^{16}$O. A sub-class of events corresponding to the direct 3-$\alpha$ decay of the Hoyle state is isolated., Comment: contribution to the 2nd Workshop on "State of the Art in Nuclear Cluster Physics" (SOTANCP2), Universite Libre de Bruxelles (Belgium), May 25-28, 2010, to be published in the International Journal of Modern Physics E

Published
2010
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2. Influence of neutron enrichment on compound system formation and decay in 78Kr+40Ca and 86Kr+48Ca reactions at 10 AMeV

Author

Pirrone S., Politi G., Lacommara M., Wieleczko J. P., Ademard G., De Filippo E., Vigilante M., Amorini F., Auditore L., Beck C., Berceanu I., Bonnet E., Borderie B., Cardella G., Chbihi A., Colonna M., Frankland J. D., Geraci E., Henry E., La Guidara E., Lanzalone G., Lautesse P., Lebhertz D., Le Neindre N., Lombardo I., Loria D., Mazurek K., Pagano A., Papa M., Piasecki E., Porto F., Quinlann M., Rizzo F., Rosato E., Russotto P., Schroeder W. U., Spadaccini G., Trifirò A., Toke J., Trimarchi M., Verde G., D'ONOFRIO, Antonio, S.Kumar and A.K.Jain, S., Pirrone, G., Politi, LA COMMARA, Marco, J. P., Wieleczko, G., Ademard, E., De Filippo, Vigilante, Mariano, F., Amorini, L., Auditore, C., Beck, I., Berceanu, E., Bonnet, B., Borderie, G., Cardella, A., Chbihi, M., Colonna, A., D’Onofrio, J. D., Frankland, E., Geraci, E., Henry, E., La Guidara, G., Lanzalone, P., Lautesse, D., Lebhertz, N., Leneindre, Lombardo, Ivano, D., Loria, K., Mazurek, A., Pagano, M., Papa, E., Piasecki, F., Porto, M., Quinlannl, F., Rizzo, Rosato, Elio, P., Russotto, W. U., Schroeder, Spadaccini, Giulio, A., Trifirò, J., Tõke, M., Trimarchi, G., 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), 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), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-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), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pirrone, S., Politi, G., Lacommara, M., Wieleczko, J. P., Ademard, G., De Filippo, E., Vigilante, M., Amorini, F., Auditore, L., Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D'Onofrio, Antonio, Frankland, J. D., Geraci, E., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, D., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlann, M., Rizzo, F., Rosato, E., Russotto, P., Schroeder, W. U., Spadaccini, G., Trifirò, A., Toke, J., Trimarchi, M., and Verde, G.

Subjects
nuclear reactions fusion reactions nuclear fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Low and Intermediate energy heavy-ion reactions
Abstract

The de-excitation of medium mass nuclei 118,134Ba produced in fusion process of 78,86Kr on 40,48Ca targets at 10 AMeV is studied, in order to investigate the isospin dependence of the decay modes; the neutron enrichment of the compound nuclei is in fact expected to play an important role on the emission mechanisms, providing crucial information on fundamental nuclear quantities such as level density, fission barrier, viscosity and symmetry energy. The experiment was performed at INFN-LNS with the 4π multidetector for charged particles CHIMERA, used for the first time in this low energy regime, thanks to a suitable Pulse Shape Discrimination method for charge identification applied to the silicon detectors. Preliminary results show a different isotopic composition and relative enrichment for the same Z in the two systems. The yields of the Intermediate Mass Fragments (IMF, 3

Published
2013

3. Freeze-out configuration properties in the 197Au + 197Au reaction at 23 AMeV

Author

Najman, R., Planeta, R., Sochocka, A., Amorini, F., Auditore, L., Cap, T., Cardella, G., De Filippo, E., Geraci, E., Grzeszczuk, A., Kowalski, S., Kozik, T., Lanzalone, G., Lombardo, I., Majka, Z., Nicolis, N. G., Pagano, A., Piasecki, E., Pirrone, S., Politi, G., Rizzo, F., Russotto, P., Siwek-Wilczynska, K., Skwira-Chalot, I., Trifiro, A., Trimarchi, M., Wilczynski, J., and Zipper, W.

Subjects
Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Data from the experiment on the 197Au + 197Au reaction at 23 AMeV are analyzed with an aim to find signatures of exotic nuclear configurations such as toroid-shaped objects. The experimental data are compared with predictions of the ETNA code dedicated to look for such configurations and with the QMD model. A novel criterion of selecting events possibly resulting from the formation of exotic freeze-out configurations, "the efficiency factor", is tested. Comparison between experimental data and model predictions may indicate for the formation of flat/toroidal nuclear systems.

Published
2015
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4. Freeze-out configuration properties in the ^{197}Au+^{197}Au reaction at 23A MeV

Author

Najman, Rafał, Płaneta, Roman, Sochocka, Anna, Amorini, F., Auditore, L., Cap, T., Cardella, G., De Filippo, E., Geraci, E., Grzeszczuk, A., Kowalski, S., Kozik, Tomasz, Lanzalone, G., Lombardo, I., Majka, Zbigniew, Nicolis, N. G., Pagano, A., Piasecki, E., Pirrone, S., Politi, G., Rizzo, F., Russotto, P., Siwek-Wilczyńska, K., Skwira-Chalot, I., Trifiro, A., Trimarchi, M., Wilczyński, J., and Zipper, W.

Subjects
Nuclear Theory
Abstract

Data from an experiment on the ^{197}Au+^{197}Au reaction at 23AMeV are analyzed with an aim to find signatures of exotic nuclear configurations such as toroid-shaped objects. The experimental data are compared with predictions of the etna code, dedicated to look for such configurations, and with the quantum molecular dynamics (QMD) model. A novel criterion of selecting events possibly resulting from the formation of exotic freeze-out configurations, "the efficiency factor", is tested. Comparison between experimental data and model predictions may indicate the formation of flat and/or toroidal nuclear systems.

Published
2015

5. Evidence for a Novel Reaction Mechanism of a Prompt Shock-Induced Fission Following the Fusion of 78Kr and 40Ca Nuclei at E/A =10 MeV

Author

Henry, E., Toke, J., Nyibule, S., Quinlan, M., Schroder, W. U., Ademard, G., Amorini, F., Auditore, L., Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., Filippo, E., D Onofrio, A., Frankland, J. D., Geraci, E., La Guidara, E., La Commara, M., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, D., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Rosato, E., Rusotto, P., Spadaccini, G., Trifiro, A., Trimarchi, M., Giuseppe Verde, Vigilante, M., Wieleczko, J. P., Grand Accélérateur National d'Ions Lourds (GANIL), 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), 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), 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 Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-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)-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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

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

An analysis of experimental data from the inverse-kinematics ISODEC experiment on 78Kr+40Ca reaction at a bombarding energy of 10 AMeV has revealed signatures of a hitherto unknown reaction mechanism, intermediate between the classical damped binary collisions and fusion-fission, but also substantially different from what is being termed in the literature as fast fission or quasi fission. These signatures point to a scenario where the system fuses transiently while virtually equilibrating mass asymmetry and energy and, yet, keeping part of the energy stored in a collective shock-imparted and, possibly, angular momentum bearing form of excitation. Subsequently the system fissions dynamically along the collision or shock axis with the emerging fragments featuring a broad mass spectrum centered around symmetric fission, relative velocities somewhat higher along the fission axis than in transverse direction, and virtually no intrinsic spin. The class of massasymmetric fission events shows a distinct preference for the more massive fragments to proceed along the beam direction, a characteristic reminiscent of that reported earlier for dynamic fragmentation of projectile-like fragments alone and pointing to the memory of the initial mass and velocity distribution., 5 PAGES, 6 FIGURES

Published
2014

6. Alpha-particle clustering in excited expanding self-conjugate nuclei

Author

Borderie, B., Raduta, Ad. R., Ademard, G., Rivet, M. F., De Filippo, E., Geraci, E., Le Neindre, N., Cardella, G., Lanzalone, G., Lombardo, I., Lopez, O., Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Rizzo, F., Russotto, P., Greco, V., La Cognata, M., Spitaleri, C., 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), 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), University of Catania [Italy], Istituto Nazionale di Fisica Nucleare, Sezione di Catania (INFN), and Università degli studi di Catania [Catania]

Subjects
Physics, Nuclear reaction, 010308 nuclear & particles physics, QC1-999, Nuclear Theory, FOS: Physical sciences, Alpha particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 3. Good health, Nuclear physics, Fragmentation (mass spectrometry), Excited state, 0103 physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Cluster analysis, Nucleon, Conjugate
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction 40Ca + 12C at 25 MeV/nucleon was used to produce alpha-emission sources. From a careful selection of these sources provided by a complete detection and from comparisons with models of sequential and simultaneous decays, strong indications in favour of $\alpha$-particle clustering in excited 16O, 20Ne and 24}Mg are reported., Comment: 8 pages, 4 figures, 12th International Conference on Nucleus-Nucleus collisions (NN2015), 21-26 June 2015, Catania, Italy

Published
2016

7. Correlations between emission timescale of fragments and isospin dynamics in $^{124}$Sn+$^{64}$Ni and $^{112}$Sn+$^{58}$Ni reactions at 35 AMeV

Author

De Filippo, E., Pagano, A., Russotto, P., Amorini, F., Anzalone, A., Auditore, Lucrezia, Baran, V., Berceanu, I., Borderie, B., Bougault, R., Bruno, M., Cap, T., Cardella, G., Cavallaro, S., Chatterjee, M. B., Chbihi, A., Colonna, M., D’Agostino, M., Dayras, R., Di Toro, M., Frankland, J., Galichet, E., Gawlikowicz, W., Geraci, E., Grzeszczuk, A., Guazzoni, P., Kowalski, S., La Guidara, E., Lanzalone, G., Lanzanò, G., Le Neindre, N., Lombardo, I., Maiolino, C., Papa, M., Piasecki, E., Pirrone, S., Planeta, R., Politi, G., Pop, A., Porto, F., Rivet, M. F., Rizzo, F., Rosato, E., Schmidt, K., Siwek Wilczynska, K., Skwira Chalot, I., Trifiro', Antonio, Trimarchi, Marina, Verde, G., Vigilante, M., Wieleczko, J. P., Wilczynski, J., Zetta, L., Zipper, W., 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)

Subjects
25.70.Mn, 25.70.Pq, Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

We present a new experimental method to correlate the isotopic composition of intermediate mass fragments (IMF) emitted at mid-rapidity in semi-peripheral collisions with the emission timescale: IMFs emitted in the early stage of the reaction show larger values of $$ isospin asymmetry, stronger angular anisotropies and reduced odd-even staggering effects in neutron to proton ratio $$ distributions than those produced in sequential statistical emission. All these effects support the concept of isospin "migration", that is sensitive to the density gradient between participant and quasi-spectator nuclear matter, in the so called neck fragmentation mechanism. By comparing the data to a Stochastic Mean Field (SMF) simulation we show that this method gives valuable constraints on the symmetry energy term of nuclear equation of state at subsaturation densities. An indication emerges for a linear density dependence of the symmetry energy., Comment: 17 pages, 7 figures; submitted to Physical Rev. C

Published
2012
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8. Evidence for $��$-particle condensation in nuclei from the Hoyle state deexcitation

Author

Raduta, Ad. R., Borderie, B., Geraci, E., Neindre, N. Le, Napolitani, P., Rivet, M. F., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., De Filippo, E., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Lopez, O., Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., and Wieleczko, J. P.

Subjects
Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction $^{40}$Ca+$^{12}$C at 25 MeV/nucleon was used to produce excited states candidates to $��$-particle condensation. Complete kinematic characterization of individual decay events, made possible by a high-granularity 4$��$ charged particle multi-detector, reveals that 7.5$\pm$4.0% of the particle decays of the Hoyle state correspond to direct decays in three equal-energy $��$-particles., Phys. Lett. B, in press

Published
2011
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9. Isospin Diffusion and Equilibration for Sn+Sn collisions at E/A=35 MeV

Author

Sun, Z. Y., Tsang, M. B., Lynch, W. G., Verde, G., Amorini, F., Andronenko, L., Andronenko, M., Cardella, G., Chatterje, M., Danielewicz, P., De Filippo, E., Dinh, P., Galichet, E., Geraci, E., Hua, H., La Guidara, E., Lanzalone, G., Liu, H., Lu, F., Lukyanov, S., Maiolino, C., Pagano, A., Piantelli, S., Papa, M., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., Santonocito, D., and Zhang, Y. X.

Subjects
Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Equilibration and equilibration rates have been measured by colliding Sn nuclei with different isospin asymmetries at beam energies of E/A=35 MeV. Using the yields of mirror nuclei of 7Li and 7Be, we have studied the diffusion of isospin asymmetry by combining data from asymmetric 112Sn+124Sn and 124Sn+112Sn collisions with that from symmetric 112Sn+112Sn and 124Sn+124Sn collisions. We use these measurements to probe isospin equilibration in central collisions where nucleon-nucleon collisions are strongly blocked by the Pauli exclusion principal. The results are consistent with transport theoretical calculations that predict a degree of transparency in these collisions, but inconsistent with the emission of intermediate mass fragments by a single chemically equilibrated source. Comparisons with ImQMD calculations are consistent with results obtained at higher incident energies that provide constraints on the density dependence of the symmetry energy., 13 pages, 3 figures, submitted to PRC Rapid Communications

Published
2010

10. Production of $\alpha$-particle condensate states in heavy-ion collisions

Author

Raduta, Ad.R., Borderie, B., Geraci, E., Le Neindre, N., Napolitani, P., Rivet, M. F., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., De Filippo, E., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Lopez, O., Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., Wieleczko, J.P., 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 Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 7. Clean energy, 01 natural sciences, Nuclear physics, Fragmentation (mass spectrometry), Excited state, 0103 physical sciences, Heavy ion, 010306 general physics, Nucleon, Nuclear Experiment, Nuclear theory, α particles
Abstract

The fragmentation of quasi-projectiles from the nuclear reaction $^{40}Ca$ + $^{12}C$ at 25 MeV/nucleon was used to produce excited states candidates to $\alpha$-particle condensation. The experiment was performed at LNS-Catania using the CHIMERA multidetector. Accepting the emission simultaneity and equality among the $\alpha$-particle kinetic energies as experimental criteria for deciding in favor of the condensate nature of an excited state, we analyze the $0_2^+$ and $2_2^+$ states of $^{12}$C and the $0_6^+$ state of $^{16}$O. A sub-class of events corresponding to the direct 3-$\alpha$ decay of the Hoyle state is isolated., Comment: contribution to the 2nd Workshop on "State of the Art in Nuclear Cluster Physics" (SOTANCP2), Universite Libre de Bruxelles (Belgium), May 25-28, 2010, to be published in the International Journal of Modern Physics E

Published
2010

11. Alpha-particle condensation in excited 12C

Author

Raduta, Ad R., Borderie, B., Geraci, E., Neindre, N. Le, Napolitani, P., Rivet, M. F., Alba, R., Amorini, F., Cardella, G., Chatterjee, M., Filippo, E., Guinet, D., Lautesse, P., La Guidara, E., Lanzalone, G., Lanzano, G., Lombardo, I., Olivier Lopez, Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., Wieleczko, J. P., 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 Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)

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

The fragmentation of quasi-projectiles from the nuclear reaction $^{40}Ca$+$^{12}C$ at 25 MeV/nucleon was used to produce excited states candidates to $\alpha$-particle condensation. The methodology relies on high granularity 4$\pi$ detection coupled to correlation function techniques. Under the assumption that the equality among the kinetic energies of the emitted $\alpha$-particles and the emission simultaneity constitutes a reliable fingerprint of $\alpha$ condensation, we identify several tens of events corresponding to the deexcitation of the Hoyle state of $^{12}$C which fulfill the condition., Comment: 5 pages, 3 figures

Published
2010

12. Hierarchy effects in light framents at mid-velocity emission

Author

Amorini, F., Anzalone, A., Auditore, L., Baran, V., Berceanu, I., Blicharska, J., Borderie, B., Bougault, R., Bruno, M., Brzychczyk, J., Cardella, G., Cavallaro, S., Chatterjee, M. B., Chbihi, A., Colonna, M., Agostino, M. D., Dayras, R., Filippo, E., Di Toro, M., Frankland, J. D., Galichet, E., Gawlikowicz, W., Geraci, E., Giustolisi, F., Grassi, L., Grzeszczuk, A., Guazzoni, P., Guinet, D., Kowalski, S., La Guidara, E., Lanzalone, G., Lanzanò, G., Nicolas Le Neindre, Lombardo, I., Maiolino, C., Majka, Z., Pagano, A., Papa, M., Petrovici, M., Piasecki, E., Pirrone, S., Płaneta, R., Politi, G., Pope, A., Porto, F., Rivet, M. F., Rizzo, F., Rosato, E., Russotto, P., Schmidt, K., Siwek-Wilczyńska, K., Skwira, I., Trifirò, A., Trimarchi, M., Verde, G., Vigilante, M., Wieleczko, J. P., Wilczyński, J., Zetta, L., Zipper, W., 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), 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)-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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Lion, Michel

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

Intermediate mass fragments (IMF) emitted with multiplicity MIMF ≥ 3 at mid-velocity in semi-central reactions induced by 124Sn projectile (35 A.MeV) on 64Ni target have been studied. The results show a clear correlation between the fragment sizes and the corresponding transverse velocities. We interpret this correlation as signature of hierarchy effects in nuclear multifragmentation. A correlation with the fragments isospin contents is also found. Qualitative comparisons with SMF calculations suggests that these correlations are good observables for the symmetry term of the EOS at sub-saturation density.

Published
2010

13. Isospin Dependence of Incomplete Fusion Reactions at 25 MeV/Nucleon

Author

Amorini, F., Cardella, G., Giuliani, G., Papa, M., Agodi, C., Alba, R., Anzalone, A., Berceanu, I., Cavallaro, S., B. Chatterjee, M., Coniglione, R., De Filippo, E., Di Pietro, A., Geraci, E., Grassi, L., Grzeszczuk, A., Figuera, P., La Guidara, E., Lanzalone, G., Le Neindre, N., Lombardo, I., Maiolino, C., Pagano, A., Pirrone, S., Politi, G., Pop, A., Porto, F., Rizzo, F., Russotto, P., Santonocito, D., Sapienza, P., Verde, G., 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), and CHIMERA

Subjects
25.70.Lm, 21.65.Ef, 21.65.Mn, 25.70.Jj, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

40Ca+;{40,48}Ca,46Ti reactions at 25 MeV/nucleon have been studied using the 4pi CHIMERA detector. An isospin effect on the competition between fusionlike and binarylike reaction mechanisms has been observed. The probability of producing a heavy residue is lower in the case of N approximately Z colliding systems as compared to the case of reactions induced on the neutron rich 48Ca target. Predictions based on constrained molecular dynamics II calculations show that the competition between fusionlike and binary reactions in the selected centrality bins can constrain the parametrization of the symmetry energy and its density dependence in the nuclear equation of state.

Published
2009

14. Centrality dependence of isospin effect signatures in $^{124}$Sn+$^{64}$Ni and $^{112}$Sn+$^{58}$Ni reactions

Author

Planeta, R, Amorini, F, Anzalone, A, Auditore, Lucrezia, Baran, V, Benisz, A, Berceanu, I, Bonasera, A, Borderie, B, Borgensztajn, J, Bougault, R, Bruno, M, Brzychczyk, J, Cardella, G, Cavallaro, S, Chatterjee, Mb, Chbihi, A, Colonna, M, D'Agostino, M, Dayras, R, DE FILIPPO, E, DI TORO, M, Frankland, J, Galichet, E, Gawlikowicz, W, Geraci, E, Giuliani, G, Giustolisi, F, Grzeszczuk, A, Guazzoni, P, Guinet, D, Kowalski, S, Krauze, M, LA GUIDARA, E, Lanzano, G, Lanzalone, G, LE NEINDRE, N, Lukasik, J, Maiolino, C, Majka, Z, Nicolis, Ng, Pagano, A, Papa, M, Petrovici, M, Piasecki, E, Pirrone, S, Politi, G, Pop, A, Porto, F, Rivet, Mf, Rosato, E, Rizzo, F, Russotto, P, Schmidt, K, SIWEK WILCZYNSKA, K, SKWIRA CHALOT, I, Sochocka, A, Swiderski, L, Trifiro', Antonio, Trimarchi, Marina, Vannini, G, Vigilanti, M, Wieleczko, Jp, Wilczynski, J, Zetta, L, Zipper, W., 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), ISOSPIN, R. Płaneta, F. Amorini, A. Anzalone, L. Auditore, V. Baran, A. Benisz, I. Berceanu, A. Bonasera, B. Borderie, J. Borgensztajn, R. Bougault, M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, A. Chbihi, M. Colonna, M. D’Agostino, R. Dayra, E. De Filippo, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, G. Giuliani, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, S. Kowalski, M. Krauze, E. La Guidara, G. Lanzano, G. Lanzalone, N. Le Neindre, J. Łukasik, C. Maiolino, Z. Majka, N. G. Nicoli, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, G. Politi, A. Pop, F. Porto, M. F. Rivet, E. Rosato, F. Rizzo, P. Russotto, K. Schmidt, K. Siwek-Wilczynska, I. Skwira-Chalot, A. Sochocka, L. Swiderski, A. Trifiro, M. Trimarchi, G. Vannini, M. Vigilanti, J. P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ISOSPIN EFFECTS, IMPACT PARAMETER, Nuclear Theory, MOLECULAR DYNAMICS, EXPERIMENT, 25.70.Lm, 25.70.Pq, HEAVY-ION COLLISIONS, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

Signatures of isospin effects were investigated for neutron-rich (124Sn+64Ni) and neutron-poor (112Sn+58Ni) systems at 35 MeV/nucleon for noncentral collisions. The centrality dependence of these signatures was tested for several impact parameter estimators. Our main observations are (i) the yields of 1H and 3He particles in the neutron-poor system are strongly enhanced with respect to the neutron-rich system, and the yields of 3H, 6He, and 7,8Li are suppressed at all impact parameters, (ii) the yields of 2H, 4He, and 6Li particles are almost the same for both systems, (iii) the N/Z ratio of intermediate mass fragments is correlated with the neutron richness of the system and is weakly dependent on the centrality of the collision, and (iv) the neutron richness of the detected fragments increases strongly with decreasing rapidity in the range from that of the projectile-like fragment to the c.m. region. The gross features of experimental data are reproduced by quantum molecular dynamics model calculations. A comparison between model calculations and the data indicates that the fragments produced in the c.m. regions are weakly excited.

Published
2008

15. Isospin effects studied with the CHIMERA detector at 35 Mev/nucleon

Author

Płaneta, R., Amorini, F., Anzalone, A., Auditore, L., Baran, V., Berceanu, I., Blicharska, J., Broderie, B., Bougault, R., Bruno, M., Cardella, G., Cavallaro, S., Chatterjee, M. B., Chbihi, A., Colonna, M., D'Agostino, M., De Filippo, E., Dayras, R., Ditoro, M., Frankland, J., Galichet, E., Gawlikowicz, W., Geraci, E., Giustolisi, F., Grzeszczuk, Andrzej, Guazzoni, P., Guinet, D., Kowalski, Seweryn, Laguidara, E., Lanzano, G., Lanzalone, G., Łukasik, J., Maiolino, C., Majka, Z., Leneindre, N., Nicolis, N. G., Pagano, A., Papa, M., Petrovici, M., Piasecki, E., Pirrone, S., Politi, G., Pop, A., Porto, F., Rivet, M. F., Rosato, E., Rizzo, F., Russo, S., Russotto, P., Sassiv, M., Schmidt, Katarzyna, Siwek-Wilczyńska, K., Skwira-Chalot, I., Sochocka, A., Sperduto, M. L., Świderski, L., Trifiro, A., Trimarchi, M., Vannini, G., Verde, G., Vigilante, M., Wieliczko, J. P., Wilczyński, J., Zetta, L., and Zipper, Wiktor

Subjects
detektor CHIMERA, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, izospin, kwantowa dynamika molekularna, reakcje jądrowe, Nuclear Experiment
Abstract

The yield of light charged particles and intermediate mass fragments is studied for the neutron-rich, 124Sn+64Ni, and neutron-poor, 112Sn+58Ni, reactions at 35MeV/nucleon as a function of the impact parameter. Our main observations are: (i) The yields of 1H, 3He and 4He particles in the neutron-poor system are enhanced with respect to the neutron-rich system and the yield of 3H is suppressed at all impact parameters, (ii) The ratio of 3H to 3He yield is three times larger for neutron poor system, (iii) The N/Z ratio of the emitted intermediate-mass fragments shows dependence on the isospin of the system, (iv) The neutron richness of detected intermediate mass fragments depends strongly on their rapidity. The gross features of the experimental data are reproduced by quantum molecular dynamics model calculations.

Published
2006

16. Dynamical fission in $^{124}$Sn+$^{64}$Ni collision at 35A MeV

Author

De Filippo, E., Pagano, A., Piasecki, E., Amorini, F., Anzalone, A., Auditore, L., Baran, V., Berceanu, I., Blicharska, J., Brzychczyk, J., Bonasera, A., Borderie, B., Bougault, R., Bruno, M., Cardella, G., Cavallaro, S., B. Chatterjee, M., Chbihi, A., Colonna, M., Dayras, R., Di Toro, M., Frankland, J.D., Galichet, E., Gawlikowicz, W., Geraci, E., Giustolisi, F., Grzeszczuk, A., Guazzoni, P., Guinet, D., Iacono-Manno, M., Kowalski, S., La Guidara, E., Lanzanó, G., Lanzalone, G., Le Neindre, N., Li, S., Lo Nigro, S., Maiolino, C., Majka, Z., Papa, M., Petrovici, M., Pirrone, S., Planeta, R., Politi, G., Pop, A., Porto, F., Rivet, M.-F., Rosato, E., Rizzo, F., Russo, S., Russotto, P., Sassi, M., Schmidt, K., Siwek-Wilczynska, K., Skwira, I., Sperduto, M. L., Steckmeyer, J.C., Swiderski, L., Trifirò, A., Trimarchi, M., Vannini, G., Vigilante, M., Wieleczko, J.P., Xiao, Z., Zetta, L., Zipper, W., 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), REVERSE, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, 25.70.Jj, 25.70.Mn, 25.70.Pq
Abstract

NIM, Matière Nucléaire; Some properties of fast, nonequilibrium splitting of projectiles in the $^{124}$Sn+$^{64}$Ni reaction at 35A MeV were determined using the 4$\pi$ CHIMERA detector system. In particular the charge distributions, in- and out-of-plane angular distributions, and relative velocities of projectilelike fragments were measured. The time scale of the process was estimated and it turned out that the process is sequential but much faster than the ordinary, equilibrated fission.

Published
2005

17. How to calibrate the time scale of emission of intermediate mass fragments

Author

Wilczynski, J, DE FILIPPO, E, Pagano, A, Amorini, F, Anzalone, A, Auditore, Lucrezia, Baran, V, Berceanu, I, Blicharska, J, Brzychczyk, J, Bonasera, A, Borderie, B, Bogault, R, Bruno, M, Cardella, G, Cavallaro, S, Chatterjee, Mb, Chbihi, A, Cibor, J, Colonna, M, D'Agostino, M, Dayras, R, DI TORO, M, Frankland, J, Galichet, E, Gawlikowicz, W, Geraci, E, Giustolisi, F, Grzeszczuk, A, Guazzoni, P, Guinet, D, IACONO MANNO, M, Kowalski, S, LA GUIDARA, E, Lanzano, G, Lanzalone, G, LE NEINDRE, N, Li, S, Maiolino, C, Majka, Z, Papa, M, Petrovici, M, Piasecki, E, Pirrone, S, Planeta, R, Politi, G, Pop, A, Porto, F, Rivet, Mf, Rosato, E, Rizzo, F, Russo, S, Russotto, P, Sassi, M, Schmidt, K, SIWEK WILCZYNSKA, K, Skwira, I, Sperduto, Ml, Swiderski, L, Trifiro', Antonio, Trimarchi, Marina, Vannini, G, Vigilante, M, Wieleczko, Jp, Wu, H, Xiao, Z, Zetta, L, Zipper, W., 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), 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)-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), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), CHIMERA, 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), J. WILCZYNSKI, E. DE FILIPPO, A. PAGANO, F. AMORINI, A. ANZALONE, L. AUDITORE, V. BARAN, I. BERCEANU, J. BLICHARSKA, J. BRZYCHCZYK, A. BONASERA, B. BORDERIE, R. BOGAULT, M. BRUNO, G. CARDELLA, S. CAVALLARO, M.B. CHATTERJEE, A. CHBIHI, J. CIBOR, M. COLONNA, M. D'AGOSTINO, R. DAYRAS, M. DI TORO, J. FRANKLAND, E. GALICHET, W. GAWLIKOWICZ, E. GERACI, F. GIUSTOLISI, A. GRZESZCZUK, P. GUAZZONI, D. GUINET, M. IACONO-MANNO, S. KOWALSKI, E. LA GUIDARA, G. LANZANO, G. LANZALONE, N. LE NEINDRE, S. LI, C. MAIOLINO, Z. MAJKA, M. PAPA, M. PETROVICI, E. PIASECKI, S. PIRRONE, R. P LANETA, G. POLITI, A. POP, F. PORTO, M.F. RIVET, E. ROSATO, F. RIZZO, S. RUSSO, P. RUSSOTTO, M. SASSI, K. SCHMIDT, K. SIWEK-WILCZYNSKA, I. SKWIRA, M.L. SPERDUTO, L. SWIDERSKI, A. TRIFIRO', M. TRIMARCHI, G. VANNINI, M. VIGILANTE, J.P. WIELECZKO, H. WU, Z. XIAO, L. ZETTA, W. ZIPPER, J., Wilczynski, E., De Filippo, A., Pagano, F., Amorini, A., Anzalone, L., Auditore, V., Baran, I., Berceanu, J., Blicharska, J., Brzychczyk, A., Bonasera, B., Borderie, R., Bougault, M., Bruno, G., Cardella, S., Cavallaro, M. B., Chatterjee, A., Chbihi, J., Cibor, M., Colonna, M., D'Agostino, R., Dayra, M., Di Toro, J. D., Frankland, E., Galichet, W., Gawlikowicz, E., Geraci, F., Giustolisi, A., Grzeszczuk, P., Guazzoni, D., Guinet, M., Iacono Manno, S., Kowalski, E., La Guidara, G., Lanzanò, G., Lanzalone, N., Le Neindre, S., Li, C., Maiolino, Z., Majka, M., Papa, M., Petrovici, E., Piasecki, S., Pirrone, R., Planeta, G., Politi, A., Pop, F., Porto, M. F., Rivet, F., Rizzo, Rosato, Elio, S., Russo, P., Russotto, M., Sassi, K., Schmidt, K., Siwek Wilczynska, I., Skwira, M. L., Sperduto, L., Swiderski, A., Trifirò, M., Trimarchi, G., Vannini, Vigilante, Mariano, J. P., Wieleczko, H., Wu, Z., Xiao, L., Zetta, and W., Zipper

Subjects
COLLISIONS, REAZIONI SEMI-PERIFERICHE, Nuclear and High Energy Physics, Scale (ratio), multifragmentation, Nuclear Theory, General Physics and Astronomy, Time sequence, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, 0103 physical sciences, 010306 general physics, Nuclear Experiment, emission time scale, REAZIONI NUCLEARI FRA IONI PESANTI, Physics, 010308 nuclear & particles physics, Settore FIS/01 - Fisica Sperimentale, FISSION, nucleus-nucleus collision, TEMPI DI EMISSIONE DEI FRAMMENTI, PRODUZIONE DI FRAMMENTI, CORRELAZIONI IN VELOCITA' RELATIVA, Nucleon
Abstract

In order to obtain information on the time sequence and time scale of the production of intermediate mass fragments (IMF) in nucleus-nucleus collisions at intermediate energies it is proposed to analyze correlations between relative velocities of IMF's with respect to projectile-like fragments (PLF) and target-like fragments (TLF). Experimental data on the production of IMF's in the 124Sn+64Ni reaction, taken with the CHIMERA multidetector array at 35 MeV/nucleon, have been analyzed with the proposed method. Read More: http://www.worldscientific.com/doi/abs/10.1142/S0218301305003119?prevSearch=%5BContrib%3A+rosato%5D&searchHistoryKey=

Published
2004

18. Isospin effects studied with the chimera detector at 35 MeV/nucleon

Author

Planeta, R., Amorini, F., Anzalone, A., Auditore, L., Baran, V., Berceanu, I., Blicharska, J., Brzychczyk, J., Borderie, B., Bougault, R., Bruno, M., Cardella, G., Cavallaro, S., Chatterjee, M. B., Chbihi, A., Colonna, M., D Agostino, M., Defilippo, E., Dayras, R., Ditoro, M., Frankland, J., Galichet, E., Gawlikowicz, W., Geraci, E., Giustolisi, F., Grzeszczuk, A., Guazzoni, P., Guinet, D., Iacono-Manno, M., Kowalski, S., Laguidara, E., Lanzano, G., Lanzalone, G., Jerzy Łukasik, Maiolino, C., Majka, Z., Leneindre, N., Nicolis, N. G., Pagano, A., Papa, M., Petrovici, M., Piasecki, E., Pirrone, S., Politi, G., Pop, A., Porto, F., Rivet, M. F., Rosato, E., Rizzo, F., Russo, S., Russotto, P., Sassiv, M., Schmidt, K., Siwek-Wilczynska, K., Skwira-Chalot, I., Sochocka, A., Sperduto, M. L., Swiderski, L., Trifiro, A., Trimarchi, M., Vannini, G., Verde, G., Vigilante, M., Wieleczko, J. P., Wilczynski, J., Zetta, L., Zipper, W., 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), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CHIMERA, Planeta R, Amorini F, Anzalone A, Auditore L, Baran V, Berceanu I, Blicharska J, Brzychczyk J, Borderie B, Bougault R, Bruno M, Cardella G, Cavallaro S, Chatterjee MB, Chbihi A, Colonna M, D'Agostino M, DeFilippo E, Dayras R, DiToro M, Frankland J, Galichet E, Gawlikowicz W, Geraci E, Giustolisi F, Grzeszczuk A, Guazzoni P, Guinet D, Iacono-Manno M, Kowalski S, LaGuidara E, Lanzano G, Lanzalone G, Lukasik J, Maiolino C, Majka Z, LeNeindre N, Nicolis NG, Pagano A, Papa M, Petrovici M, Piasecki E, Pirrone S, Politi G, Pop A, Porto F, Rivet MF, Rosato E, Rizzo F, Russo S, Russotto P, Sassiv M, Schmidt K, Siwek-Wilczynska K, Skwira-Chalot I, Sochocka A, Sperduto ML, Swiderski L, Trifiro A, Trimarchi M, Vannini G, Verde G, Vigilante M, Wieleczko JP, Wilczynski J, Zetta L, Zipper W, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
25.70.Mn, 25.70.Pq, HEAVY ION REACTIONS, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

NIM; International audience; The yield of light charged particles and intermediate mass fragments is studied for the neutron-rich, $^{124}$Sn+$^{64}$Ni, and neutron-poor, $^{112}$Sn+$^{58}$Ni, reactions at 35 MeV/nucleon as a function of the impact parameter. Our main observations are: (i) The yields of $^{1}$H, $^{3}$He and $^{4}$He particles in the neutron-poor system are enhanced with respect to the neutron-rich system and the yield of $^{3}$H is suppressed at all impact parameters, (ii) The ratio of $^{3}H to $^{3}$He yield is three times larger for neutron poor system, (iii) The N/Z ratio of the emitted intermediate-mass fragments shows dependence on the isospin of the system, (iv) The neutron richness of detected intermediate mass fragments depends strongly on their rapidity. The gross features of the experimental data are reproduced by quantum molecular dynamics model calculations.

19. Damping mechanism of the Giant Dipole Resonance in hot nuclei with A=130

Author

Wieland, O., Bracco, A., Camera, F., Benzoni, G., Blasi, N., Crespi, F. C. L., Leoni, S., Million, B., Barlini, S., Kravchuk, V. L., Gramegna, F., Lanchais, A., Adam Maj, Kmiecik, M., Casini, G., Chiari, M., Nannini, A., Bruno, M., Geraci, E., Wieland O, Bracco A, Camera F, Benzoni G, Blasi N, Crespi FCL, Leoni S, Million B, Barlini S, Kravchuk VL, Gramegna F, Lanchais A, Maj A, Kmiecik M, Casini G, Chiari M, Nannini A, Bruno M, and Geraci E.

Subjects
GIANT DIPOLE RESONANCE, HEAVY ION REACTIONS, Nuclear Theory, Nuclear Experiment, COMPOUND NUCLEUS
Abstract

The gamma decay of the Giant Dipole Resonance (GDR) in Ce-132 nuclei has been measured using the reactions Ni-64 (E-lab = :300,400, 500 MeV) + Zn-68 and O-16 (E-lab = 130,250 MeV) + 116 Sn. The analysis of the data shows clearly that the GDR, width increases steadily with temperature at least up to 4 MeV of the temperature. The data can be well interpreted within the thermal shape fluctuation model

20. Mirror nuclei emission and isospin transport at intermediate energies

Author

Lombardo, I., Agodi, C., Alba, R., Amorini, F., Anzalone, A., Berceanu, I., Chatterjee, M. B., Cardella, G., Cavallaro, S., Coniglione, R., Filippo, E., Di Pietro, A., Figuera, P., Geraci, E., Giuliani, G., Grassi, L., Grzeszczuk, A., La Guidara, E., Lanzalone, G., Le Neindre, N., Maiolino, C., Angelo Pagano, Papa, M., Pirrone, S., Pop, A., Politi, G., Porto, F., Rizzo, F., Russotto, P., Santonocito, D., Sapienza, P., and Verde, G.

Subjects
Nuclear Theory, Nuclear Experiment, XX
Abstract

Isospin effects are studied in reactions induced by 40Ca projectiles at E/A=25 MeV on 40Ca, 48Ca and 46Ti targets. The N/Z of projectile-like, target-like and mid-velocity sources are probed by measuring isotopic (7Li/6Li and 9Be/7Be) and isobaric (7Li/7Be) yield ratios, for semi-peripheral events. The presence of isospin diffusion and drift phenomena is observed. It seems indeed that the interaction time between projectile and target does not allow a complete charge equilibration between quasi-projectile and quasi-target sources.

21. GDR in hot nuclei: New measurements

Author

Camera, F., Kmiecik, M., Wieland, O., Benzoni, G., Bracco, A., Brambilla, S., Crespi, F., Mason, P., Moroni, A., Million, B., Leoni, S., Maj, A., Styczen, J., Brekiesz, M., Meczynski, W., Zieblinski, M., Fabiana Gramegna, Barlini, S., Kravchuk, V. L., Lanchais, A. L., Mastinu, P. F., Bruno, M., D Agostino, M., Geraci, E., Ordine, A., Casini, G., Chiari, M., F. Camera, M. Kmiecik, O. Wieland, G. Benzoni, A. Bracco, S. Brambilla, F. Crespi, P. Mason, A. Moroni, B. Million, S. Leoni, A. Maj, J. Styczeń, M. Brekiesz, W. Męczyński, M. Ziębliński, F. Gramegna, S. Barlini, V.L. Kravchuk, A.L. Lanchai, P.F. Mastinu, M. Bruno, M. D’Agostino, E. Geraci, A. Ordine, G. Casini, and M. Chiari

Subjects
GAMMA DECAY, GIANT DIPOLE RESONANCE, HOT NUCLEI, HEAVY ION REACTIONS, EXCLUSIVE MEASUREMENTS, Nuclear Theory, Nuclear Experiment
Abstract

The measured properties of the Giant Dipole Resonance in hot rotating nuclei are successfully described with the model of thermal fluctuations, even though there are still some open problems especially at very low (T < 1.2MeV), very high (T > 2.5MeV) temperatures and missing data in some mass regions. Recent experimental works have addressed more specific problems regarding the nuclear shape and its behaviour in very particular and delimited phase space regions. In this paper will be discussed new exclusive measurements of the GDR decay in heavy 216Rn nuclei (where the shape of nuclei surviving fission have been probed) and some preliminary data on the 132Ce nuclei at very high excitation energy.

22. Dipolar degrees of freedom and isospin equilibration processes in heavy ion collisions

Author

E. V. Pagano, A. Pagano, S. Cavallaro, A. Anzalone, G. Cardella, Ji-Youn Han, E. La Guidara, L. Acosta, M. Trimarchi, C. Agodi, Antonio Trifiro, L. Quattrocchi, E. Geraci, Giuseppe Verde, Lucrezia Auditore, Ivano Lombardo, Elio Rosato, P. Russotto, G. Politi, I. Berceanu, S. Pirrone, B. Gnoffo, F. Amorini, Michele Papa, F. Rizzo, L. Francalanza, M. B. Chatterjee, E. De Filippo, Triestino Minniti, F. Porto, C. Maiolino, G. Lanzalone, L. Grassi, Mariano Vigilante, Papa, M., Berceanu, I., Acosta, L., Amorini, F., Agodi, C., Anzalone, A., Auditore, L., Cardella, G., Cavallaro, S., Chatterjee, M. B., De Filippo, E., Francalanza, L., Geraci, E., Grassi, L., Gnoffo, B., Han, J., La Guidara, E., Lanzalone, G., Lombardo, Ivano, Maiolino, C., Minniti, T., Pagano, A., Pagano, E. V., Pirrone, S., Politi, G., Porto, F., Quattrocchi, L., Rizzo, F., Rosato, Elio, Russotto, P., Trifirò, A., Trimarchi, M., Verde, G., and Vigilante, Mariano

Subjects
Physics, Nuclear and High Energy Physics, Low and intermediate energy heavy-ion reactions, Nuclear Theory, Degrees of freedom (physics and chemistry), FOS: Physical sciences, Forces in hadronic systems and effective interactions, Dipole, Isospin, Dissipative system, Heavy ion, Nuclear Experiment (nucl-ex), Atomic physics, Nucleon, Nuclear Experiment
Abstract

Background: In heavy ion collision at the Fermi energies Isospin equilibration processes occur- ring when nuclei with different charge/mass asymmetries interacts have been investigated to get information on the nucleon-nucleon Iso-vectorial effective interaction. Purpose: In this paper, for the system 48Ca +27 Al at 40 MeV/nucleon, we investigate on this process by means of an observable tightly linked to isospin equilibration processes and sensitive in exclusive way to the dynamical stage of the collision. From the comparison with dynamical model calculations we want also to obtain information on the Iso-vectorial effective microscopic interaction. Method: The average time derivative of the total dipole associated to the relative motion of all emitted charged particles and fragments has been determined from the measured charges and velocities by using the 4? multi-detector CHIMERA. The average has been determined for semi- peripheral collisions and for different charges Zb of the biggest produced fragment. Experimental evidences collected for the systems 27Al+48Ca and 27Al+40Ca at 40 MeV/nucleon used to support this novel method of investigation are also discussed., Submitted for publication on Phys. Rev. C. 0n 24-oct-2014

Published
2015

23. Emission of fragments in Ca+Ca reaction at 25 MeV/nucleon

Author

LOMBARDO, IVANO, ROSATO, ELIO, VIGILANTE, MARIANO, 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, P. Russotto, S. Santoro, A. Trifirò, M. Trimarchi, G. Verde, B.A.Li and J.B.Natowitz, 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, Vigilante, Mariano, Lombardo, I., Acosta, L., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Buscemi, M., Cardella, G., Chatterjee, M., Filippo, E., Geraci, E., Giuliani, G., Grassi, L., Han, J., Guidara, 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., and Vigilante, M.

Subjects
Physics, History, Nuclear Theory, and isobaric spin 24.10.Pa Thermal and statistical models, Computer Science Applications, Education, Nuclear physics, Physics and Astronomy (all), parity, Isospin, 25.75.Gz Particle correlations and fluctuations 21.65.-f Nuclear matter 27.40.+z 39(less-than-or-equal-to)A(less-than-or-equal-to)58 21.10.Hw Spin, Isobaric process, Neutron, Atomic physics, Nuclear Experiment, Nucleon
Abstract

We discuss experimental data concerning 40,48Ca+ 40,48Ca reactions at 25 MeV/nucleon; the 4π multi-detector Chimera has been used as detection device. Effects that can be attributed to the neutron to proton ratios (N/Z) degree of freedom have been investigated. From the analysis of experimental data it seems that the neutron richness of the interacting system plays an important role on the evolution of fusion-like sources formed in semi-central collisions. In particular, it is observed that the larger is the neutron content and the larger is the emission of heavy residues. Experimental data have been compared with CoMD-II model calculations; a moderately stiff symmetry energy should be used to reproduce satisfactorily the data. A thermodynamical analysis on fusion-like sources has been also performed. In semi-peripheral collisions, isospin diffusion signals have been found. They have been investigated by analyzing isobaric emission ( 7Li/7Be) of quasi-projectile sources. Experimental data indicate that an incomplete N/Z mixing is reached during the interaction phase.

Published
2013

24. 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

25. 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

26. Effects of neutron richness on the behavior of nuclear systems at intermediate energies

Author

Cardella, G., Giuliani, G., Papa, M., Acosta, L., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cavallaro, S., Chatterjee, M. B., De Filippo, E. , Geraci, E. , Grassi, L. , Han, La Guidara, E. , Loria, D. , Lanzalone, G. , Maiolino, C. , Minniti, T. , Pagano, A. , Pirrone, S. , Politi, G. , Porto, F. , Rizzo, F. , Russotto, P. , Santoro, S. , Trifirò, A. , Trimarchi, M. , Verde, LOMBARDO, IVANO, VIGILANTE, MARIANO, Cardella, G., Giuliani, G., Lombardo, I., Papa, M., Acosta, L., Agodi, C., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cavallaro, S., Chatterjee, M., De Filippo, E., Geraci, E., Grassi, L., Han, J., La Guidara, E., Loria, D., Lanzalone, G., Maiolino, C., Minniti, T., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., Santoro, S., Trifirò, A., Trimarchi, M., Verde, G., Vigilante, M., Lombardo, Ivano, Chatterjee, M. B., De, Filippo, E., Geraci, E., Grassi, L., Han, La, Guidara, E., Loria, D., Lanzalone, G., Maiolino, C., Minniti, T., Pagano, A., Pirrone, S., Politi, G., Porto, F., Rizzo, F., Russotto, P., Santoro, S., Trifirò, A., Trimarchi, M., Verde, and Vigilante, Mariano

Subjects
Physics, Nuclear and High Energy Physics, Ion beam, Multifragment emission and correlations, Nuclear Theory, Strongly damped collisions, Symmetry (physics), Nuclear physics, Molecular dynamics, Physics::Accelerator Physics, Neutron, Production (computer science), Nuclear Experiment, Nucleon
Abstract

We discuss results concerning the behavior of hot nuclear sources formed in 40 ,48Ca+40 ,48Ca reactions at 25 MeV/nucleon. A correlation between the neutron-to-proton ratio of the total systems and heavy residue production is found. This correlation underlines the strong role played by the neutron-to-proton ratio degree of freedom on the behavior of hot nuclei at intermediate energies. Comparisons of our data with Constrained Molecular Dynamics calculations confirm that a moderately stiff behavior of the symmetry potential must be used to reproduce experimental data. These findings open the way for future investigations with exotic beams at radioactive ion beam facilities. © 2012 American Physical Society.

Published
2012

27. Isospin aspects in nuclear reactions involving Ca beams at 25 MeV/nucleon

Author

F. Rizzo, E. De Filippo, E. Geraci, S. Cavallaro, C. Agodi, Ji-Youn Han, A. Di Pietro, L. Grassi, A. Anzalone, G. Lanzalone, I. Lombardo, P. Figuera, Marina Trimarchi, P. Russotto, I. Berceanu, A. Grzeszczuk, Antonio Trifiro, Lucrezia Auditore, N. Le Neindre, Mariano Vigilante, Domenico Santonocito, D. Loria, G. Politi, F. Amorini, G. Cardella, C. Maiolino, A. Pagano, G. Giuliani, R. Alba, E. La Guidara, Amalia Pop, M. Papa, F. Porto, Giuseppe Verde, S. Pirrone, M. B. Chatterjee, 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), Lombardo, Ivano, Agodi, C., Alba, R., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cardella, G., Cavallaro, S., Chatterjee, M. B., De Filippo, E., Di Pietro, A., Figuera, P., Giuliani, G., Geraci, E., Grassi, L., Grzeszczuk, A., Han, J., La Guidara, E., Lanzalone, G., Le Neindre, N., Loria, D., Maiolino, C., Pagano, A., Papa, M., Pirrone, S., Politi, G., Pop, A., Porto, F., Rizzo, F., Russotto, P., Santonocito, D., Trifirò, A., Trimarchi, M., Verde, G., and Vigilante, Mariano

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Light nucleus, Reaction mechanism, Nuclear collision, 010308 nuclear & particles physics, Nuclear Theory, Degrees of freedom (statistics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Atomic and Molecular Physics, and Optics, Entrance channel, Nuclear physics, Isospin, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment
Abstract

Isospin dependence of dynamical and thermodynamical properties observed in reactions 40Ca+ 40,48Ca and 40Ca + 46Ti at 25 MeV/nucleon has been studied. We used the CHIMERA multi-detector array. Strong isospin effects are seen in the isotopic distributions of light nuclei and in the competition between different reaction mechanisms in semi-central collisions. We will show also preliminary results obtained in nuclear collision 48Ca + 48Ca at 25MeV/nucleon, having very high N/Z value in the entrance channel (N/Z = 1. 4). The enhancement of evaporation residue production confirms the strong role played by the N/Z degree of freedom in nuclear dynamics.

Published
2011

28. Light clusters emission in nuclear reactions at 25 MeV/nucleon with different N/Z of entrance channels

Author

R. Alba, Lucrezia Auditore, E. DeFilippo, C. Agodi, G. Lanzalone, Domenico Santonocito, F. Rizzo, Ji-Youn Han, Giuseppe Verde, I. Lombardo, P. Russotto, D. Loria, S. Pirrone, G. Cardella, G. Politi, P. Figuera, G. Giuliani, A. Dipietro, S. Cavallaro, L. Grassi, A. Anzalone, M. Papa, N. Le Neindre, F. Amorini, F. Porto, E. La Guidara, I. Berceanu, C. Maiolino, E. Geraci, Mariano Vigilante, A. Pagano, A. Grzeszczuk, Antonio Trifiro, Amalia Pop, M. B. Chatterjee, Istituto Nazionale di Fisica Nucleare, Sezione di Catania (INFN), Università degli studi di Catania [Catania], 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), Lombardo, Ivano, Agodi, C., Alba, R., Amorini, F., Anzalone, A., Auditore, L., Berceanu, I., Cardella, G., Cavallaro, S., Chatterjee, M. B., Defilippo, E., Dipietro, A., Figuera, P., Geraci, E., Giuliani, G., Grassi, L., Grzeszczuk, A., Han, J., La Guidara, E., Lanzalone, G., Le Neindre, N., Loria, D., Maiolino, C., Pagano, A., Papa, M., Pirrone, S., Politi, G., Pop, A., Porto, F., Rizzo, F., Russotto, P., Santonocito, D., Trifirò, A., Verde, G., and Vigilante, Mariano

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, IDENTIFICATION, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, 7. Clean energy, Nuclear physics, FUSION, 0103 physical sciences, Neutron, Atomic physics, CHIMERA, FRAGMENTATION, 010306 general physics, Nucleon, Nuclear Experiment, DETECTOR
Abstract

We discuss results on the emission of light clusters in nuclear reactions 40 Ca + 40,48 Ca ,46 Ti at 25 MeV/nucleon. They were detected and identified in mass and charge by means of the CHIMERA 4π array. Inclusive emission at forward angles shows that isotopic yields of Li and Be nuclei are related to the N/Z values of entrance channels. Moreover, structure effects and even-odd staggering in charge distributions of intermediate mass fragments emitted at forward angles will be shown. In agreement with previous experimental findings, odd-even effects are clearly visible in N ≈ Z systems, while are less pronounced in the neutron rich collision 40 Ca +48 Ca . These experimental findings are compared to preliminary data obtained in 40 Ca +48 Ca . collision at 25 MeV/nucleon.

Published
2010

29. 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

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