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1. The symmetry energy at suprasaturation density and the ASY-EOS experiment at GSI

Author

De Filippo E., Russotto P., Acosta L., Adamczyk M., Al-Ajlan A., Al-Garawi M., Al-Homaidhi S., Amorini F., Auditore L., Aumann T., Ayyad Y., Basrak Z., Benlliure J., Boisjoli M., Boretzky K., Brzychczyk J., Budzanowski A., Caesar C., Cardella G., Cammarata P., Chajecki Z., Chartier M., Chbihi A., Colonna M., Cozma M.D., Czech B., Di Toro M., Famiano M., Gannon S., Gašparić I., Grassi L., Guazzoni C., Guazzoni P., Heil M., Heilborn L., Introzzi R., Isobe T., Kezzar K., Kiš M., Krasznahorkay A., Kupny S., Kurz N., La Guidara E., Lanzalone G., Lasko P., Le Fèvre A., Leifels Y., Lemmon R.C., Li Q.F., Lombardo I., Łukasik J., Lynch W.G., Marini P., Matthews Z., May L., Minniti T., Mostazo M., Pagano A., Pagano E.V., Papa M., Pawłowski P., Pirrone S., Politi G., Porto F., Reviol W., Riccio F., Rizzo F., Rosato E., Rossi D., Santoro S., Sarantites D.G., Simon H., Skwirczynska I., Sosin Z., Stuhl L., Trautmann W., Trifirò A., Trimarchi M., Tsang M.B., Verde G., Veselsky M., Vigilante M., Wang Yongjia, Wieloch A., Wigg P., Winkelbauer J., Wolter H.H., Wu P., Yennello S., Zambon P., Zetta L., and Zoric M.

Subjects
Physics, QC1-999
Abstract

The ASY-EOS experiment at GSI laboratory measured the direct and elliptic flow of neutrons and light charged particles in the reaction 197Au+197 Au at 400 A MeV incident energy. The ratio of elliptic flow of neutrons with respect to that of the light charged particles was used as main experimental observable to probe the density dependence of the symmetry energy term of the nuclear equation of state. Results, obtained by comparison of the experimental data with the UrQMD model predictions, strongly support a moderately soft to linear density dependence of the symmetry energy at suprasaturation densities below 2ρ0.

Published
2017
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2. Experimental study of the $^{40,48}$Ca+ $^{40,48}$Ca reactions at 35 MeV/nucleon

Author

Fable, Q., Chbihi, A., Boisjoli, M., Frankland, J. D., Fèvre, A. Le, Neindre, N. Le, Marini, P., Verde, G., Ademard, G., Bardelli, L., Bhattacharya, C., Bhattacharya, S., Bonnet, E., Borderie, B., Bougault, R., Casini, G., Commara, M., Dayras, R., Ducret, J. E., Farget, F., Galichet, E., Génard, T., Gramegna, F., Gruyer, D., Henri, M., Kundu, S., Lemarié, J., Lopez, Olivier, Łukasik, J., Manduci, L., Moisan, J., Mukherjee, G., Napolitani, P., Olmi, A., Pârlog, M., Piantelli, S., Poggi, G., Rebillard-Soulié, A., Roy, R., Sorgunlu, B., Velardita, S., Vient, E., Vigilante, M., and Wieleczko, J. P.

Subjects
Nuclear Experiment, Physics - Atomic Physics
Abstract

In this article we investigate $^{40,48}$Ca+$^{40,48}$Ca peripheral and semi-peripheral reactions at 35 MeV/nucleon. Data were obtained using the unique coupling of the VAMOS high acceptance spectrometer and the INDRA charged particle multidetector.The spectrometer allowed high resolution measurement of charge, mass and velocity of the cold projectile-like fragment (PLF), while the INDRA detector recorded coincident charged particles with nearly $4\pi$ acceptance.The measured isotopic composition of the PLF identified in VAMOS and the average light charged particle (LCP) multiplicities are promising observables to study the isospin diffusion.The detection of the PLF in coincidence with LCP allows the reconstruction of the mass, charge and excitation energy of the associated initial quasi-projectile nuclei (QP), as well as the extraction of apparent temperatures.We investigate the suitability of the isoscaling method with the PLF and the experimental reconstructed QP.The extracted $\alpha$ and $\Delta$ isoscaling parameters present a dependence on the considered system combination that could justify their use as a surrogate for isospin asymmetry in isospin transport studies.The reconstruction of the QP allows to observe an evolution of the $\alpha/\Delta$ with the size of the QP, the latter being consistent with a strong surface contribution to the symmetry energy term in finite nuclei. This leads to the conclusion that the reconstruction of the primary source is mandatory for the study of the symmetry energy term based on the isoscaling method for such reactions.

Published
2022
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3. The ASY-EOS Experiment at GSI

Author

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., Trautmann W., 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 R., 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., Santoro S., Simon H., Skwirczynska I., Sosin Z., Stuhl L., Trifirò A., Trimarchi M., Tsang M.B., Verde G., Veselsky M., Vigilante M., Wieloch A., Wigg P., Wolter H.H., Wu P., Yennello S., Zambon P., Zetta L., and Zoric M.

Subjects
Physics, QC1-999
Abstract

The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. In the ASY-EOS experiment at the GSI laboratory, flows of neutrons and light charged particles were measured for 197Au+197Au collisions at 400 MeV/nucleon. Flow results obtained for the Au+Au system, in comparison with predictions of the UrQMD transport model, confirm the moderately soft to linear density dependence of the symmetry energy deduced from the earlier FOPI-LAND data.

Published
2016
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4. The ASY-EOS experiment at GSI: Constraining the symmetry energy at supra-saturation densities

Author

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., Trautmann W., 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 R., 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., Santoro S., Simon H., Skwirczynska I., Sosin Z., Stuhl L., Trifirò A., Trimarchi M., Tsang M.B., Verde G., Veselsky M., Vigilante M., Wieloch A., Wigg P., Wolter H.H., Wu P., Yennello S., Zambon P., Zetta L., and Zoric M.

Subjects
Physics, QC1-999
Abstract

The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. In the ASY-EOS experiment at the GSI laboratory, flows of neutrons and light charged particles were measured for 197Au+197Au, 96Zr+96Zr and 96Ru+96Ru collisions at 400 MeV/nucleon with the Large Area Neutron Detector LAND as part of a setup with several additional detection systems used for the event characterization. Flow results obtained for the Au+Au system, in comparison with predictions of the UrQMD transport model, confirm the moderately soft to linear density dependence of the symmetry energy deduced from the earlier FOPI-LAND data.

Published
2015
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5. Recent results from INDRA

Author

Chbihi A., Frankland J.D., Lopez O., Boisjoli M., Bonnet E., Gruyer D., Marini P., Ademard G., Rivet M.-F., Verde G., Bougault R., Borderie B., Galichet E., La Commara M., Le Neindre N., Legouée E., Lombardo I., Manduci L., Pârlog M., Rosato E., Roy R., Spadaccini G., Vient E., Vigilante M., and Wieleczko J.P.

Subjects
Physics, QC1-999
Abstract

Recent results of the INDRA collaboration are presented in this contribution. They concern the evolution of reaction dynamics from the first stage of the collision to the production of fragments. Different probes are used to evidence the stopping/transparency, collective flow and the symmetry energy term of the nuclear equation of state.

Published
2015
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6. The ASY-EOS experiment at GSI: investigating symmetry energy at supra-saturation densities

Author

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 R., 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., and Zoric M.

Subjects
Physics, QC1-999
Abstract

The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy-ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. The results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model simulations favoured a moderately soft symmetry term, but suffer from a considerable statistical uncertainty. These results have been confirmed by an independent analysis based on the Tübingen QMD simulations. 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. The present status of the data analysis is reported

Published
2014
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7. Sequential fissions of heavy nuclear systems

Author

Gruyer D., Frankland J.D., Bonnet E., Boisjoli M., Chbihi A., Manduci L., Marini P., Mazurek K., and Nadtochy P.N.

Subjects
Physics, QC1-999
Abstract

In 129Xe + natSn central collisions from 12 to 20 MeV/A measured with the INDRA 4π multidetector, the three-fragment exit channel occurs with a significant cross section. In this contribution, we show that these fragments arise from two successive binary splittings of a heavy composite system. Strong Coulomb proximity effects are observed in the three-fragment final state. By comparison with Coulomb trajectory calculations, we show that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming compatible with quasi-simultaneous multifragmentation above 18 MeV/A.

Published
2013
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8. Accessing the nuclear symmetry energy in Ca+Ca collisions

Author

Chbihi A., Boisjoli M., and Wigg P. C.

Subjects
Physics, QC1-999
Abstract

The status of the analysis of the INDRA-VAMOS experiement performed at GANIL, using the reactions 40,48Ca+40,48Ca reactions at 35AMeV, are presented. Isotopic distributions of fragments produced in multifragmentation events provide information on the importance of the surface term contribution in the symmetry energy by comparison to AMD predictions.

Published
2012
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9. Nuclear symmetry energy in calcium-calcium collisions (INDRA-VAMOS)

Author

Chartier M., Boisjoli M., Wigg P.C., Chbihi A., Lemmon R., Frankland J.D., Le Neindre N., and Marini P.

Subjects
Physics, QC1-999
Abstract

The density dependence of the symmetry energy is of great interest to many fields of nuclear physics and nuclear astro-physics. The E503 INDRA-VAMOS experiment performed at GANIL in 2007 is intended to provide further sub-saturation constraints using calcium-calcium collisions around the Fermi energy (35AMeV). In these proceedings this experiment will be discussed in the context of the physics it is aiming to study and will give a brief summary of the current progress of the data analysis.

Published
2012
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10. Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density

Author

Russotto, P., Gannon, S., Kupny, S., Lasko, P., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Basrak, Z., Benlliure, J., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Caesar, C., Cardella, G., Cammarata, P., Chajecki, Z., Chartier, M., Chbihi, A., Colonna, M., Cozma, M. D., Czech, B., De Filippo, E., Di Toro, M., Famiano, M., Gašparić, I., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Kiš, M., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Fèvre, A. Le, Leifels, Y., Lemmon, R. C., Li, Q. F., Lombardo, I., Lukasik, J., Lynch, W. G., Marini, P., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Pagano, E. V., Papa, M., Pawlowski, P., Pirrone, S., Politi, G., Porto, F., Reviol, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Santoro, S., Sarantites, D. G., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trautmann, W., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Veselsky, M., Vigilante, M., Wang, Yongjia, Wieloch, A., Wigg, P., Winkelbauer, J., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., and Zoric, M.

Subjects
Nuclear Experiment
Abstract

Directed and elliptic flows of neutrons and light charged particles were measured for the reaction 197Au+197Au at 400 MeV/nucleon incident energy within the ASY-EOS experimental campaign at the GSI laboratory. The detection system consisted of the Large Area Neutron Detector LAND, combined with parts of the CHIMERA multidetector, of the ALADIN Time-of-flight Wall, and of the Washington-University Microball detector. The latter three arrays were used for the event characterization and reaction-plane reconstruction. In addition, an array of triple telescopes, KRATTA, was used for complementary measurements of the isotopic composition and flows of light charged particles. From the comparison of the elliptic flow ratio of neutrons with respect to charged particles with UrQMD predictions, a value \gamma = 0.72 \pm 0.19 is obtained for the power-law coefficient describing the density dependence of the potential part in the parametrization of the symmetry energy. It represents a new and more stringent constraint for the regime of supra-saturation density and confirms, with a considerably smaller uncertainty, the moderately soft to linear density dependence deduced from the earlier FOPI-LAND data. The densities probed are shown to reach beyond twice saturation., Comment: 25 pages, 22 figures, accepted for publication in Physical Review C

Published
2016
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11. Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems

Author

Marini, P., Zheng, H., Boisjoli, M., Verde, G., Chbihi, A., Ademard, G., Auger, L., Bhattacharya, C., Borderie, B., Bougault, R., Frankland, J., Galichet, E., Gruyer, D., Kundu, S., La Commara, M., Lombardo, I., Lopez, O., Mukherjee, G., Napolitani, P., Parlog, M., Rivet, M. F., Rosato, E., Roy, R., Spadaccini, G., Vigilante, M., Wigg, P. C., and Bonasera, A.

Subjects
Nuclear Experiment
Abstract

We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experimental setup, constituted by the coupling of the INDRA 4$\pi$ detector array to the forward angle VAMOS magnetic spectrometer, allowed us to reconstruct the mass, charge and excitation energy of the decaying hot projectile-like sources. Furthermore, by means of quantum fluctuation analysis techniques, temperatures and mean volumes per particle "as seen by" bosons and fermions separately are correlated to the excitation energy of the reconstructed system. The obtained results are consistent with the production of dilute mixed (bosons/fermions) systems, where bosons experience a smaller volume as compared to the surrounding fermionic gas. Our findings recall similar phenomena observed in the study of boson condensates in atomic traps., Comment: Submitted to Phys. Rev. Lett. (december 2014)

Published
2015
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12. Isospin effects and symmetry energy studies with INDRA

Author

Ademard, G., Borderie, B., Chbihi, A., Lopez, O., Napolitani, P., Rivet, M. F., Boisjoli, M., Bonnet, E., Bougault, R., Frankland, J. D., Galichet, E., Guinet, D., Kabtoul, M., Lehaut, G., Lautesse, P., La Commara, M., Neindre, N. Le, Marini, P., Pârlog, M., Pawłowski, P., Rosato, E., Roy, R., Spadaccini, E., Vient, E., Vigilante, M., and Wieleczko., J. P.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The equation of state of asymmetric nuclear matter is still controversial, as predictions at subsaturation as well as above normal density widely diverge. We discuss several experimental results measured in heavy-ion collisions with the INDRA array in the incident energy range 5-80 MeV/nucleon. In particular an estimate of the density dependence of the symmetry energy is derived from isospin diffusion results compared with a transport code: the potential part of the symmetry energy linearly increases with the density. We demonstrate that isospin equilibrium is reached in mid-central collisions for the two reactions Ni+Au at 52 MeV/nucleon and Xe+Sn at 32 MeV/nucleon. New possible variables and an improved modelization to investigate symmetry energy are discussed., Comment: Review for the special issue of EPJA on symmetry energy. 20 pages, 16 figures

Published
2013
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13. Coulomb chronometry to probe the decay mechanism of hot nuclei

Author

Gruyer, Diego, Frankland, J D., Bonnet, Eric, Chbihi, A, Ademard, G, Boisjoli, M, Borderie, B, Bougault, R, Galichet, E, Gauthier, J, Guinet, D, Lautesse, P, Neindre, N Le, Legouée, E, Lombardo, I, Lopez, O, Manduci, L, Marini, P, Mazurek, K, Nadtochy, P., Pârlog, M, Rivet, M. F., Roy, R., Rosato, E, Spadaccini, G, Verde, G, Vient, E, Vigilante, M, and Wieleczko, J. P.

Subjects
Nuclear Experiment
Abstract

In 129 Xe+ nat Sn central collisions from 8 to 25 MeV/A, the three-fragment exit channel occurs with a significant cross section. We show that these fragments arise from two successive binary splittings of a heavy composite system. The sequence of fragment production is determined. Strong Coulomb proximity effects are observed in the three-fragment final state. A comparison with Coulomb trajec-tory calculations shows that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming quasi-simultaneous above excitation energy E * = 4.0$\pm$0.5 MeV/A. This transition from sequential to simultaneous break-up was interpreted as the signature of the onset of multifragmentation for the three-fragment exit channel in this system., Comment: 12 pages; 13 Figures; 4 Table; Accepted for publication in Physical Review C

Published
2013
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14. Nuclear multifragmentation time-scale and fluctuations of largest fragment size

Author

Gruyer, D., Frankland, J. D., Botet, R., Ploszajczak, M., Bonnet, E., Chbihi, A., Ademard, G., Boisjoli, M., Borderie, B., Bougault, R., Guinet, D., Lautesse, P., Manduci, L., Neindre, N. Le, Marini, P., Pawlowski, P., Rivet, M. F., Rosato, E., Spadaccini, G., Vigilante, M., and Wieleczko, J. P.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Distributions of the largest fragment charge, Zmax, in multifragmentation reactions around the Fermi energy can be decomposed into a sum of a Gaussian and a Gumbel distribution, whereas at much higher or lower energies one or the other distribution is asymptotically dominant. We demonstrate the same generic behavior for the largest cluster size in critical aggregation models for small systems, in or out of equilibrium, around the critical point. By analogy with the time-dependent irreversible aggregation model, we infer that Zmax distributions are characteristic of the multifragmentation time-scale, which is largely determined by the onset of radial expansion in this energy range., Comment: Accepted for publication in Physical Review Letters on 8/4/2013

Published
2012
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15. New isospin e ffects in central heavy-ion collisions at Fermi energies

Author

Gagnon-Moisan, F., Galichet, E., Rivet, M. -F., Borderie, B., Colonna, M., Roy, R., Ademard, G., Boisjoli, M., Bonnet, E., Bougault, R., Chbihi, A., Frankland, J. D., Guinet, D., Lautesse, P., ee, E. Legou, Neindre, N. Le, Manduci, L., Marini, P., Napolitani, P., Pârlog, M., Pawlowski, P., Rosato, E., and Vigilante, M.

Subjects
Nuclear Experiment
Abstract

Isospin e ffects on multifragmentation properties were studied thanks to nuclear collisions between di fferent isotopes of xenon beams and tin targets. It is shown that, in central collisions leading to multifragmentation, the mean number of fragments and their mean kinetic energy increase with the neutron-richness of the total system. Comparisons with a stochastic transport model allow to attribute the multiplicity increase to the multifragmentation stage, before secondary decay. The total charge bound in fragments is proposed as an alternate variable to quantify preequilibrium emission and to investigate symmetry energy e ffects., Comment: 10 pages. 6 figures. Submitted to Physical Review C

Published
2012
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16. The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities

Author

Russotto, P., Chartier, M., De Filippo, E., Févre, A. Le, Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Łukasik, J., Marini, P., Pagano, A., 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., 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., Di 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., La Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W. G., 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., Trifiró, 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., and Zoric, M.

Subjects
Nuclear Experiment
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
2012
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17. Isospin effects and symmetry energy studies with INDRA

Author

Ademard, G., Borderie, B., Chbihi, A., Lopez, O., Napolitani, P., Rivet, M. F., Boisjoli, M., Bonnet, E., Bougault, R., Frankland, J. D., Galichet, E., Gruyer, D., Guinet, D., Kabtoul, M., Lehaut, G., Lautesse, P., La Commara, M., Le Neindre, N., Marini, P., Pârlog, M., Pawłowski, P., Rosato, E., Roy, R., Spadaccini, G., Vient, E., Vigilante, M., Wieleczko, J. P., and INDRA Collaboration

Published
2014
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18. The FAZIA project in Europe: R&D phase

Author

Bougault, R., Poggi, G., Barlini, S., Borderie, B., Casini, G., Chbihi, A., Le Neindre, N., Pârlog, M., Pasquali, G., Piantelli, S., Sosin, Z., Ademard, G., Alba, R., Anastasio, A., Barbey, S., Bardelli, L., Bini, M., Boiano, A., Boisjoli, M., Bonnet, E., Borcea, R., Bougard, B., Brulin, G., Bruno, M., Carboni, S., Cassese, C., Cassese, F., Cinausero, M., Ciolacu, L., Cruceru, I., Cruceru, M., D’Aquino, B., De Fazio, B., Degerlier, M., Desrues, P., Di Meo, P., Dueñas, J. A., Edelbruck, P., Energico, S., Falorsi, M., Frankland, J. D., Galichet, E., Gasior, K., Gramegna, F., Giordano, R., Gruyer, D., Grzeszczuk, A., Guerzoni, M., Hamrita, H., Huss, C., Kajetanowicz, M., Korcyl, K., Kordyasz, A., Kozik, T., Kulig, P., Lavergne, L., Legouée, E., Lopez, O., Łukasik, J., Maiolino, C., Marchi, T., Marini, P., Martel, I., Masone, V., Meoli, A., Merrer, Y., Morelli, L., Negoita, F., Olmi, A., Ordine, A., Paduano, G., Pain, C., Pałka, M., Passeggio, G., Pastore, G., Pawłowski, P., Petcu, M., Petrascu, H., Piasecki, E., Pontoriere, G., Rauly, E., Rivet, M. F., Rocco, R., Rosato, E., Roscilli, L., Scarlini, E., Salomon, F., Santonocito, D., Seredov, V., Serra, S., Sierpowski, D., Spadaccini, G., Spitaels, C., Stefanini, A. A., Tobia, G., Tortone, G., Twaróg, T., Valdré, S., Vanzanella, A., Vanzanella, E., Vient, E., Vigilante, M., Vitiello, G., Wanlin, E., Wieloch, A., Zipper, W., and The FAZIA Collaboration

Published
2014
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19. Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems

Author

Marini, P., Zheng, H., Boisjoli, M., Verde, G., Chbihi, A., Napolitani, P., Ademard, G., Augey, L., Bhattacharya, C., Borderie, B., Bougault, R., Frankland, J.D., Fable, Q., Galichet, E., Gruyer, D., Kundu, S., La Commara, M., Lombardo, I., Lopez, O., Mukherjee, G., Parlog, M., Rivet, M.F., Rosato, E., Roy, R., Spadaccini, G., Vigilante, M., Wigg, P.C., and Bonasera, A.

Published
2016
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20. Probing the Symmetry Term of the Nuclear Equation of State at High Baryonic Densities

Author

Russotto, P, primary, Acosta, L, additional, Adamczyk, M, additional, Al-Ajlan, A, additional, Al-Garawi, M, additional, Al-Homaidhi, S, additional, Amorini, F, additional, Auditore, L, additional, Aumann, T, additional, Ayyad, Y, additional, Basrak, Z, additional, Benlliure, J, additional, Boisjoli, M, additional, Boretzky, K, additional, Brzychczyk, J, additional, Budzanowski, A, additional, Caesar, C, additional, Cardella, G, additional, Cammarata, P, additional, Chajecki, Z, additional, Chartier, M, additional, Chbihi, A, additional, Colonna, M, additional, Cozma, M D, additional, Czech, B, additional, De Filippo, E, additional, Di Toro, M, additional, Famiano, M, additional, Gannon, S, additional, Gašparić, I, additional, Grassi, L, additional, Guazzoni, C, additional, Guazzoni, P, additional, Heil, M, additional, Heilborn, L, additional, Introzzi, R, additional, Isobe, T, additional, Kezzar, K, additional, Kiš, M, additional, Krasznahorkay, A, additional, Kupny, S, additional, Kurz, N, additional, La Guidara, E, additional, Lanzalone, G, additional, Lasko, P, additional, Le Fèvre, A, additional, Leifels, Y, additional, Lemmon, R C, additional, Li, QF, additional, Lombardo, I, additional, Łukasik, J, additional, Lynch, W G, additional, Marini, P, additional, Matthews, Z, additional, May, L, additional, Minniti, T, additional, Mostazo, M, additional, Pagano, A, additional, Pagano, E V, additional, Papa, M, additional, Pawłowski, P, additional, Pirrone, S, additional, Politi, G, additional, Porto, F, additional, Reviol, W, additional, Riccio, F, additional, Rizzo, F, additional, Rosato, E, additional, Rossi, D, additional, Santoro, S, additional, Sarantites, D G, additional, Simon, H, additional, Skwirczynska, I, additional, Sosin, Z, additional, Stuhl, L, additional, Trautmann, W, additional, Trifirò, A, additional, Trimarchi, M, additional, Tsang, M B, additional, Verde, G, additional, Veselsky, M, additional, Vigilante, M, additional, Wang, Yongjia, additional, Wieloch, A, additional, Wigg, P, additional, Winkelbauer, J, additional, Wolter, H H, additional, Wu, P, additional, Yennello, S, additional, Zambon, P, additional, Zetta, L, additional, and Zoric, M, additional

Published
2017
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21. 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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22. L’esperimento ASYEOS: studio dell’energia di simmetria ad alta densità. Risultati e prospettive future

Author

De Filippo, E, Russotto, P., Chartier, M. ., Cozma, M. D., Md, Fèvre, Le, A. ., Gannon, S. ., Gašparić, I. ., Kiš, M. ., Kupny, S. ., Leifels, Y. ., Lemmon, R. C., Rc, Q. ., Li, Łukasik, J. ., Marini, P. ., Pawłowski, P. ., Santoro, S., Trautmann, W. ., Veselsky, M. ., Acosta, L. ., Adamczyk, M. ., Ajlan, Al, Garawi, Al, Homaidhi, Al, S. ., Amorini, Auditore, Lucrezia, 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. ., Toro, Di, M. ., Famiano, M. ., Greco, V. ., Grassi, L. ., Guazzoni, C. ., Guazzoni, P. ., Heil, M. ., Heilborn, L. ., Introzzi, R. ., Isobe, T. ., Kezzar, K. ., Krasznahorkay, A. ., Kurz, Guidara, La, E. ., Lanzalone, G. ., Lasko, P. ., Lombardo, I. ., Lynch, W. G., Wg, Matthews, Z, May, L. ., Minniti, Triestino, 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., Mb, Verde, G. ., Vigilante, M. ., Wieloch, A. ., Wigg, P. ., Wolter, H. H., Hh, P. ., Wu, Yennello, S. ., Zambon, P. ., Zetta, L. ., and Zoric

Published
2015

23. The ASY-EOS Experiment at GSI

Author

Russotto, Paolo, Chartier, Marielle, Cozma, Mircea Dan, De Filippo, Enrico, Le Fèvre, Arnaud, Gannon, S., Gašparić, Igor, Kis, M., Kupny, S., Leifels, Yvonne, Lemmon, Roy Crawford, Li, Q., Lukasik, J., Marini, P., Pawlowski, P., Trautmann, Wolfgang, Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, Francesca, Auditore, Lucrezia, Aumann, Thomas, Ayyad, Y., Baran, V., Basrak, Z., Bassini, R., Benlliure Anaya, Jose Fernando, Boiano, Ciro, Boisjoli, M., Boretzky, Konstanze, Brzychczyk, Janusz, Budzanowski, Andrzej, Cardella, Giuseppe, Chajecki, Zbigniew, Chbihi, A., Colonna, Maria, Czech, Bronislaw, Di Toro, Massimo, Famiano, Michael A., Greco, V., Grassi, L., Guazzoni, Chiara, Guazzoni, P., Heil, Michael, Heilborn, L., Introzzi, Riccardo, Isobe, Tadaaki, Kezzar, K., Krasznahorkay, Attila, Kurz, Nikolaus, La Guidara, E., Lanzalone, Gaetano, Lasko, P., Lombardo, Ivano, Lynch, William G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, Sara, Pleskac, Radek, Politi, Giuseppe, Porto, Francesco, Reifarth, René, Reisdorf, Willibrord, Riccio, F., Rizzo, Francesca, Rosato, E., Rossi, Dominic M., Santoro, S., Simon, Haik, Skwirczynska, I., Sosin, Zbigniew, Stuhl, László, Trifirò, Antonio, Trimarchi, Marina, Tsang, M. Betty, Verde, Giuseppe, Veselsky, M., Vigilante, Mariano, Wieloch, A., Wigg, P., Wolter, Hermann, Wu, P., Yennello, Sherry J., Zambon, P., Zetta, L., Zoric, Maja, Russotto, Paolo, Chartier, Marielle, Cozma, Mircea Dan, De Filippo, Enrico, Le Fèvre, Arnaud, Gannon, S., Gašparić, Igor, Kis, M., Kupny, S., Leifels, Yvonne, Lemmon, Roy Crawford, Li, Q., Lukasik, J., Marini, P., Pawlowski, P., Trautmann, Wolfgang, Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, Francesca, Auditore, Lucrezia, Aumann, Thomas, Ayyad, Y., Baran, V., Basrak, Z., Bassini, R., Benlliure Anaya, Jose Fernando, Boiano, Ciro, Boisjoli, M., Boretzky, Konstanze, Brzychczyk, Janusz, Budzanowski, Andrzej, Cardella, Giuseppe, Chajecki, Zbigniew, Chbihi, A., Colonna, Maria, Czech, Bronislaw, Di Toro, Massimo, Famiano, Michael A., Greco, V., Grassi, L., Guazzoni, Chiara, Guazzoni, P., Heil, Michael, Heilborn, L., Introzzi, Riccardo, Isobe, Tadaaki, Kezzar, K., Krasznahorkay, Attila, Kurz, Nikolaus, La Guidara, E., Lanzalone, Gaetano, Lasko, P., Lombardo, Ivano, Lynch, William G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, Sara, Pleskac, Radek, Politi, Giuseppe, Porto, Francesco, Reifarth, René, Reisdorf, Willibrord, Riccio, F., Rizzo, Francesca, Rosato, E., Rossi, Dominic M., Santoro, S., Simon, Haik, Skwirczynska, I., Sosin, Zbigniew, Stuhl, László, Trifirò, Antonio, Trimarchi, Marina, Tsang, M. Betty, Verde, Giuseppe, Veselsky, M., Vigilante, Mariano, Wieloch, A., Wigg, P., Wolter, Hermann, Wu, P., Yennello, Sherry J., Zambon, P., Zetta, L., and Zoric, Maja

Abstract

The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. In the ASY-EOS experiment at the GSI laboratory, flows of neutrons and light charged particles were measured for 197Au+197Au collisions at 400 MeV/nucleon. Flow results obtained for the Au+Au system, in comparison with predictions of the UrQMD transport model, confirm the moderately soft to linear density dependence of the symmetry energy deduced from the earlier FOPI-LAND data.

Published
2016

24. Quasiprojectile and intermediate velocity isotopic ratios for light fragments emitted in the Ar 36 +Ni 58 and Ni 58 +Ni 58 reactions between 32A and 84A MeV

Author

Gauthier, J., Roy, R., St-Onge, P., Wallace, B., Rivet, M.F., Gruyer, Diego, Frankland, J.D., Chbihi, A., Boisjoli, M., Legouee, E., Pârlog, M., Bougault, R., Le Neindre, N., Marini, P., Rosato, E., Guinet, D., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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), INDRA, 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), 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), 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)-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)

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

Expérience GANIL; Isotopic ratios for light fragments (Z≤4 ) emitted by the quasiprojectile (QP) and the mid-rapidity (MR) sources are investigated by the use of a slightly asymmetric system (Ar 36 +Ni 58 ) and a symmetric one (Ni 58 +Ni 58 ) for six energies between 32A and 84A MeV and three semiperipheral centrality range selections. Experimental data come from the INDRA 4π multidetector. The results show a clear neutron-rich isotope production from the MR region as compared to the QP source. The beam energy and the centrality also show interesting different trends depending on the charge of the fragments and the emission source. Experimental results are compared to antisymmetrized molecular dynamics simulations.

Published
2014
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25. Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density

Author

Russotto, P., primary, Gannon, S., additional, Kupny, S., additional, Lasko, P., additional, Acosta, L., additional, Adamczyk, M., additional, Al-Ajlan, A., additional, Al-Garawi, M., additional, Al-Homaidhi, S., additional, Amorini, F., additional, Auditore, L., additional, Aumann, T., additional, Ayyad, Y., additional, Basrak, Z., additional, Benlliure, J., additional, Boisjoli, M., additional, Boretzky, K., additional, Brzychczyk, J., additional, Budzanowski, A., additional, Caesar, C., additional, Cardella, G., additional, Cammarata, P., additional, Chajecki, Z., additional, Chartier, M., additional, Chbihi, A., additional, Colonna, M., additional, Cozma, M. D., additional, Czech, B., additional, De Filippo, E., additional, Di Toro, M., additional, Famiano, M., additional, Gašparić, I., additional, Grassi, L., additional, Guazzoni, C., additional, Guazzoni, P., additional, Heil, M., additional, Heilborn, L., additional, Introzzi, R., additional, Isobe, T., additional, Kezzar, K., additional, Kiš, M., additional, Krasznahorkay, A., additional, Kurz, N., additional, La Guidara, E., additional, Lanzalone, G., additional, Le Fèvre, A., additional, Leifels, Y., additional, Lemmon, R. C., additional, Li, Q. F., additional, Lombardo, I., additional, Łukasik, J., additional, Lynch, W. G., additional, Marini, P., additional, Matthews, Z., additional, May, L., additional, Minniti, T., additional, Mostazo, M., additional, Pagano, A., additional, Pagano, E. V., additional, Papa, M., additional, Pawłowski, P., additional, Pirrone, S., additional, Politi, G., additional, Porto, F., additional, Reviol, W., additional, Riccio, F., additional, Rizzo, F., additional, Rosato, E., additional, Rossi, D., additional, Santoro, S., additional, Sarantites, D. G., additional, Simon, H., additional, Skwirczynska, I., additional, Sosin, Z., additional, Stuhl, L., additional, Trautmann, W., additional, Trifirò, A., additional, Trimarchi, M., additional, Tsang, M. B., additional, Verde, G., additional, Veselsky, M., additional, Vigilante, M., additional, Wang, Yongjia, additional, Wieloch, A., additional, Wigg, P., additional, Winkelbauer, J., additional, Wolter, H. H., additional, Wu, P., additional, Yennello, S., additional, Zambon, P., additional, Zetta, L., additional, and Zoric, M., additional

Published
2016
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26. The symmetry energy at suprasaturation density and the ASYEOS experiment at GSI.

Author

De Filippo, E., Russotto, P., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Basrak, Z., Benlliure, J., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Caesar, C., Cardella, G., and Cammarata, P.

Subjects
NEUTRONS, PARTICLES (Nuclear physics), EQUATIONS of state, ENERGY density, NUCLEAR energy
Abstract

The ASY-EOS experiment at GSI laboratory measured the direct and elliptic flow of neutrons and light charged particles in the reaction 197Au+197Au at 400 A MeV incident energy. The ratio of elliptic flow of neutrons with respect to that of the light charged particles was used as main experimental observable to probe the density dependence of the symmetry energy term of the nuclear equation of state. Results, obtained by comparison of the experimental data with the UrQMD model predictions, strongly support a moderately soft to linear density dependence of the symmetry energy at suprasaturation densities below 2ρ0. [ABSTRACT FROM AUTHOR]

Published
2017
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27. Étude de l'énergie de symétrie dans les collisions $^{40,48}$Ca+$^{40,48}$Ca à 35 MeV/A

Author

Boisjoli, M., 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), Université de Caen, Abdelouahad Chbihi(abdelouahad.chbihi@ganil.fr), and Lion, Michel

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Energie de symétrie, Matière nucléaire, Isoscaling, Équation d'état, Réactions nucléaires, Distributions isotopiques, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Symmetry term (Csym) inside the nuclear equation of state is studied with the help of the isoscaling parameters and the isotopic distributions widths for 40,48Ca+40,48Ca reactions at an incident energy of 35 MeV/A. Peripheral et semi-peripheral collisions are studied. A coupling between two experimental setups, VAMOS spectrometer and INDRA multidetector was done. VAMOS was able to measure the charge and mass of the projectile like fragment (PLF) with a high precision. Light charged particles were measured in coincidence with INDRA, and they give us an impact parameter and excitation energy estimations They are also used in the primary fragment reconstruction, which are the PLF parent. PLF study shows the presence of an important odd-even effect, which can be associated to the secondary decay effects. The extracted values of the symmetry energy term directly from the PLF are not reliable. Therefore, it is necessary to reconstruct the primary fragment in order to take into account the secondary decay effects. By studying primary fragments, we observe an evolution of the parameter Csym/T as a function of the charge. This evolution is attributed to the fragment excitation energy. Also, global distributions of Csym/T give us an information on the surface over the volume contributions to the symmetry energy ratio. Those ratios show important surface contributions, same results given by simulations. With extracted temperatures from proton energy spectra, a Csym value can be obtained. Those values, around 30 MeV, are coherent with values around the saturation density., Le terme d'énergie de symétrie (Csym) contenu à l'intérieur de l'équation d'état de la matière nucléaire est étudié via l'isoscaling et les formes des distributions isotopiques pour les réactions 40,48Ca+40,48Ca à une énergie incidente de 35 MeV/A. Les collisions périphériques et semi-périphériques sont étudiées. Un couplage entre deux appareils expérimentaux, le spectromètre VAMOS et le multidétecteur INDRA, a été fait. VAMOS a permis de mesurer la charge et la masse des résidus d'évaporation du quasi-projectile (PLF) avec grande précision. Les particules légères chargées ont été mesurées simultanément avec INDRA, permettant d'estimer le paramètre d'impact et l'énergie d'excitation ainsi que de reconstruire le fragment primaire, parent du PLF. L'étude des PLF montre la présence d'un effet pair-impair associé aux effets de désintégrations secondaires. L'extraction d'une information concernant Csym par l'étude des PLF, dans le cadre de cette thèse, est donc difficile, d'où la nécessité de reconstruire le fragment primaire. En étudiant les fragments primaires reconstruits, nous observons une évolution du paramètre Csym/T en fonction de la charge. Cette évolution est attribuée au degré d'excitation des fragments. De plus, la forme des distributions globales de Csym/T nous permet d'extraire le rapport des contributions de surface et de volume à l'énergie de symétrie. Ces rapports nous montrent des effets de surface importants, appuyés par les calculs théoriques. À partir des températures extraites par les spectres en énergie des protons, une valeur de Csym est extraite. Ces valeurs, autour de 30 MeV, sont cohérentes avec des valeurs autour de la densité de saturation.

Published
2013

28. Heavy ion collisions as a tool to investigate the nuclear equation of state and the structure of nuclei

Author

Paola Marini, Boisjoli, M., Wigg, P., Chbihi, A., 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), and Lion, Michel

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

Heavy ion collisions are a versatile and powerful tool to investigate both dynamic and thermodynamic features of excited nuclei and nuclear matter and to have an insight into the structure of exotic nuclei. In this talk we will present the first results on the 40,48Ca+40,48Ca at 35 MeV/nucleon experiment performed in GANIL, coupling the VAMOS spectrometer to the 4¼ charged particle array INDRA, to study the nuclear equation of state probed with isotopic distributions measurements. Such a set-up allows us to uniquely identify in charge and mass forward emitted heavy fragments, while having a complete information on the kinematics of the event by the measure of all the particles emitted in coincidence. Also, the high granularity and energy resolution of the apparatus open the possibility of applying correlation techniques to investigate alpha-cluster states in the ground state of 40Ca, predicted by a dynamical

Published
2013

29. Nuclear symmetry energy in calcium-calcium collisions

Author

Wigg, P.C., Boisjoli, M., Chartier, M., Chbihi, A., Lemmon, R., Frankland, J.D., Le Neindre, N., Marini, P., 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), 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), J.D Frankland, A. Pagano, S. Pirrone, M.-F Rivet, F. Rizzo, 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), and Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

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

International audience; The density dependence of the symmetry energy is of great interest to many fields of nuclear physics and nuclear astro-physics. The E503 INDRA-VAMOS experiment performed at GANIL in 2007 is intended to provide further sub-saturation constraints using calcium-calcium collisions around the Fermi energy (35AMeV). In these proceedings this experiment will be discussed in the context of the physics it is aiming to study and will give a brief summary of the current progress of the data analysis.

Published
2011
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30. Probing the symmetry energy with 40,48Ca+40,48Ca collisions measured with INDRA-VAMOS

Author

Boisjoli, M., 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), and Lion, Michel

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2011

31. Exploration de l'énergie de symétrie dans les collisions d'ions lourds

Author

Boisjoli, M., 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), and Lion, Michel

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
2010

32. HERACLES-II setup at TRIUMF

Author

Gauthier, J., primary, Roy, R., additional, Wallace, B., additional, St-Onge, P., additional, Frégeau, M.O., additional, Gagnon-Moisan, F., additional, Boisjoli, M., additional, and St-Pierre, C., additional

Published
2013
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33. Nuclear Multifragmentation Time Scale and Fluctuations of the Largest Fragment Size

Author

Gruyer, D., primary, Frankland, J. D., additional, Botet, R., additional, Płoszajczak, M., additional, Bonnet, E., additional, Chbihi, A., additional, Ademard, G., additional, Boisjoli, M., additional, Borderie, B., additional, Bougault, R., additional, Guinet, D., additional, Lautesse, P., additional, Manduci, L., additional, Le Neindre, N., additional, Marini, P., additional, Pawłowski, P., additional, Rivet, M. F., additional, Rosato, E., additional, Spadaccini, G., additional, Vigilante, M., additional, and Wieleczko, J. P., additional

Published
2013
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34. The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities

Author

Russotto, P, primary, Chartier, M, additional, Filippo, E De, additional, Fèvre, A Le, additional, Gannon, S, additional, Gašparić, I, additional, Kiš, M, additional, Kupny, S, additional, Leifels, Y, additional, Lemmon, R C, additional, Łukasik, J, additional, Marini, P, additional, Pagano, A, additional, Pawłowski, P, additional, Santoro, S, additional, Trautmann, W, additional, Veselsky, M, additional, Acosta, L, additional, Adamczyk, M, additional, Al-Ajlan, A, additional, Al-Garawi, M, additional, Al-Homaidhi, S, additional, Amorini, F, additional, Auditore, L, additional, Aumann, T, additional, Ayyad, Y, additional, Baran, V, additional, Basrak, Z, additional, Benlliure, J, additional, Boiano, C, additional, Boisjoli, M, additional, Boretzky, K, additional, Brzychczyk, J, additional, Budzanowski, A, additional, Cardella, G, additional, Cammarata, P, additional, Chajecki, Z, additional, Chbihi, A, additional, Colonna, M, additional, Cozma, D, additional, Czech, B, additional, Toro, M Di, additional, Famiano, M, additional, Geraci, E, additional, Greco, V, additional, Grassi, L, additional, Guazzoni, C, additional, Guazzoni, P, additional, Heil, M, additional, Heilborn, L, additional, Introzzi, R, additional, Isobe, T, additional, Kezzar, K, additional, Krasznahorkay, A, additional, Kurz, N, additional, Guidara, E La, additional, Lanzalone, G, additional, Lasko, P, additional, Li, Q, additional, Lombardo, I, additional, Lynch, W G, additional, Matthews, Z, additional, May, L, additional, Minniti, T, additional, Mostazo, M, additional, Papa, M, additional, Pirrone, S, additional, Politi, G, additional, Porto, F, additional, Reifarth, R, additional, Reisdorf, W, additional, Riccio, F, additional, Rizzo, F, additional, Rosato, E, additional, Rossi, D, additional, Simon, H, additional, Skwirczynska, I, additional, Sosin, Z, additional, Stuhl, L, additional, Trifirò, A, additional, Trimarchi, M, additional, Tsang, M B, additional, Verde, G, additional, Vigilante, M, additional, Wieloch, A, additional, Wigg, P, additional, Wolter, H H, additional, Wu, P, additional, Yennello, S, additional, Zambon, P, additional, Zetta, L, additional, and Zoric, M, additional

Published
2013
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36. New isospin effects in central heavy-ion collisions at Fermi energies

Author

Gagnon-Moisan, F., primary, Galichet, E., additional, Rivet, M.-F., additional, Borderie, B., additional, Colonna, M., additional, Roy, R., additional, Ademard, G., additional, Boisjoli, M., additional, Bonnet, E., additional, Bougault, R., additional, Chbihi, A., additional, Frankland, J. D., additional, Guinet, D., additional, Lautesse, P., additional, Legouée, E., additional, Le Neindre, N., additional, Manduci, L., additional, Marini, P., additional, Napolitani, P., additional, Pârlog, M., additional, Pawłowski, P., additional, Rosato, E., additional, and Vigilante, M., additional

Published
2012
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39. ASY-EOS experiment at GSI.

Author

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., and CAMMARATA, P.

Subjects
SYMMETRY (Physics), PROTONS, NEUTRONS, COLLISIONS (Nuclear physics), PARTICLES (Nuclear physics)
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. [ABSTRACT FROM AUTHOR]

Published
2012
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41. Coulomb chronometry to probe the decay mechanism of hot nuclei.

Author

Gruyer, D., Frankland, J. D., Bonnet, E., Chbihi, A., Ademard, G., Boisjoli, M., Borderie, B., Bougault, R., Galichet, E., Gauthier, J., Guinet, D., Lautesse, P., Le Neindre, N., Legouée, E., Lombardo, I., Lopez, O., Manduci, L., Marini, P., Mazurek, K., and Nadtochy, P. N.

Subjects
*PHASE transitions, *NUCLEAR cross sections, *NUCLEON-nucleon scattering, *NUCLEAR fragmentation, *PARTICLE decays
Abstract

In l29Xe + natSn central collisions from 8 to 25 MeV/nucleon, the three-fragment exit channel occurs with a significant cross section. We show that these fragments arise from two successive binary splittings of a heavy composite system. The sequence of fragment production is determined. Strong Coulomb proximity effects are observed in the three-fragment final state. A comparison with Coulomb trajectory calculations shows that the time scale between the consecutive breakups decreases with increasing bombarding energy, becoming quasisimultaneous above excitation energy E* = 4.0 ± 0.5 MeV/nucleon. This transition from sequential to simultaneous breakup was interpreted as the signature of the onset of multifragmentation for the three-fragment exit channel in this system. [ABSTRACT FROM AUTHOR]

Published
2015
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42. Quasiprojectile and intermediate velocity isotopic ratios for light fragments emitted in the 36Ar + 58Ni and 58Ni + S8Ni reactions between 32A and 84A MeV.

Author

Gauthier, J., Roy, R., St-Onge, R., Wallace, B., Rivet, M. F., Borderie, B., Gruyer, D., Frankland, J. D., Chbihi, A., Boisjoli, M., Legouee, E., Pârlog, M., Bougault, R., Le Neindre, N., Marini, P., Rosato, E., and Guinet, D.

Subjects
*MOLECULAR dynamics, *NEUTRONS, *ISOTOPES, *SYMMETRIC functions, *MOLECULAR physics
Abstract

Isotopic ratios for light fragments (Z ≤ 4) emitted by the quasiprojectile (QP) and the mid-rapidity (MR) sources are investigated by the use of a slightly asymmetric system (36Ar + 58Ni) and a symmetric one (58Ni + 58Ni) for six energies between 32A and 84A MeV and three semiperipheral centrality range selections. Experimental data come from the INDRA 4π multidetector. The results show a clear neutron-rich isotope production from the MR region as compared to the QP source. The beam energy and the centrality also show interesting different trends depending on the charge of the fragments and the emission source. Experimental results are compared to antisymmetrized molecular dynamics simulations. [ABSTRACT FROM AUTHOR]

Published
2014
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43. The symmetry energy at suprasaturation density and the ASY-EOS experiment at GSI

Author

S. Santoro, P. Lasko, Luis Acosta, D. G. Sarantites, S. Al-Homaidhi, K. Boretzky, Giuseppe Verde, F. Porto, S. Pirrone, Z. Chajecki, E. V. Pagano, D. M. Rossi, Zbigniew Sosin, Qingfeng Li, A. Wieloch, Sherry Yennello, F. Rizzo, L. Stuhl, M. B. Tsang, L. Zetta, Roy Crawford Lemmon, S. Kupny, Maria Colonna, M. Kiš, Martin Veselsky, P. Zambon, C. Caesar, F. Riccio, P. Cammarata, Yvonne Leifels, I. Skwirczyńska, J. Benlliure, Marina Trimarchi, Chiara Guazzoni, Mariano Vigilante, A. Trifirò, P. Russotto, Z. Basrak, A. Chbihi, L. W. May, W. Trautmann, M. Di Toro, Piotr Pawłowski, B. Czech, E. La Guidara, M.D. Cozma, W. Reviol, A. Pagano, P. Guazzoni, H. H. Wolter, Michael Famiano, J. Brzychczyk, E. De Filippo, M. Al-Garawi, G. Cardella, G. Lanzalone, Z. Matthews, Igor Gašparić, Jack Winkelbauer, W. G. Lynch, A. Budzanowski, N. Kurz, L. Grassi, M. Mostazo, A. Le Fèvre, Elio Rosato, Paola Marini, M. Zoric, Thomas Aumann, A. Krasznahorkay, Herbert A. Simon, Riccardo Introzzi, Yongjia Wang, P. Wigg, K. Kezzar, Abdulrahman Alajlan, J. Łukasik, P. Z. Wu, Yassid Ayyad, Triestino Minniti, Ivano Lombardo, Lucrezia Auditore, G. Politi, M. Boisjoli, F. Amorini, Marielle Chartier, Lauren Heilborn, Tadaaki Isobe, Matthias Heil, Michele Papa, M. Adamczyk, S. Gannon, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), De Filippo, E., Russotto, P., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Basrak, Z., Benlliure, J., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Caesar, C., Cardella, G., Cammarata, P., Chajecki, Z., Chartier, M., Chbihi, A., Colonna, M., Cozma, M. D., Czech, B., Di Toro, M., Famiano, M., Gannon, S., Gašparić, I., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Kiš, M., Krasznahorkay, A., Kupny, S., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Le Fèvre, A., Leifels, Y., Lemmon, R. C., Li, Q. F., Lombardo, I., Łukasik, J., Lynch, W. G., Marini, P., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Pagano, E. V., Papa, M., Pawłowski, P., Pirrone, S., Politi, G., Porto, F., Reviol, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Santoro, S., Sarantites, D. G., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trautmann, W., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Veselsky, M., Vigilante, M., Wang, Yongjia, Wieloch, A., Wigg, P., Winkelbauer, J., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., and Zoric, M.

Subjects
energy: symmetry, QC1-999, Hadron, Nuclear Theory, Elementary particle, Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Physics and Astronomy (all), 0103 physical sciences, Neutron, ddc:530, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Elliptic flow, gold, charged particle, Charged particle, Symmetry (physics), Darmstadt Lab, n: elliptic flow, nucleus: equation of state, density dependence, density, Baryon, Nucleon, light nucleus, saturation: density, experimental results
Abstract

International audience; The ASY-EOS experiment at GSI laboratory measured the direct and elliptic flow of neutrons and light charged particles in the reaction 197Au+197 Au at 400 A MeV incident energy. The ratio of elliptic flow of neutrons with respect to that of the light charged particles was used as main experimental observable to probe the density dependence of the symmetry energy term of the nuclear equation of state. Results, obtained by comparison of the experimental data with the UrQMD model predictions, strongly support a moderately soft to linear density dependence of the symmetry energy at suprasaturation densities below 2ρ0.

Published
2016
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44. Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems

Author

R. Bougault, M. La Commara, G. Mukherjee, J.D. Frankland, Hua Zheng, E. Galichet, P. Napolitani, Elio Rosato, B. Borderie, A. Chbihi, M.F. Rivet, Aldo Bonasera, G. Ademard, Paola Marini, Sabitra Kundu, M. Parlog, G. Spadaccini, Giuseppe Verde, C. Bhattacharya, O. Lopez, René Roy, Mariano Vigilante, P. Wigg, Diego Gruyer, Q. Fable, M. Boisjoli, L. Augey, Ivano Lombardo, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), INDRA Collaboration, 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)-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), Marini, P., Zheng, H., Boisjoli, M., Verde, G., Chbihi, A., Napolitani, P., Ademard, G., Augey, L., Bhattacharya, C., Borderie, B., Bougault, R., Frankland, J. D., Fable, Q., Galichet, E., Gruyer, D., Kundu, S., LA COMMARA, Marco, Lombardo, I., Lopez, O., Mukherjee, G., Parlog, M., Rivet, M. F., Rosato, E., Roy, R., Spadaccini, Giulio, Vigilante, Mariano, Wigg, P. C., and Bonasera, A.

Subjects
Nuclear and High Energy Physics, FOS: Physical sciences, Quantum-fluctuation method, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, law.invention, law, Quantum-fluctuations method, 0103 physical sciences, Heavy ion collisions, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Boson, Physics, Condensed Matter::Quantum Gases, 25.70.Pq, 23.60.+e, Bose–Einstein condensation, Spectrometer, Heavy ion collision, 010308 nuclear & particles physics, Bose-Einstein Condensation, Charge (physics), Fermion, lcsh:QC1-999, Coupling (physics), Atomic physics, Excitation, Bose–Einstein condensate, lcsh:Physics, Fermi Gamma-ray Space Telescope
Abstract

We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experimental setup, constituted by the coupling of the INDRA 4$\pi$ detector array to the forward angle VAMOS magnetic spectrometer, allowed us to reconstruct the mass, charge and excitation energy of the decaying hot projectile-like sources. Furthermore, by means of quantum fluctuation analysis techniques, temperatures and mean volumes per particle "as seen by" bosons and fermions separately are correlated to the excitation energy of the reconstructed system. The obtained results are consistent with the production of dilute mixed (bosons/fermions) systems, where bosons experience a smaller volume as compared to the surrounding fermionic gas. Our findings recall similar phenomena observed in the study of boson condensates in atomic traps., Comment: Submitted to Phys. Rev. Lett. (december 2014)

Published
2016
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45. The ASY-EOS Experiment at GSI

Author

Z. Basrak, A. Chbihi, Piotr Pawłowski, H. H. Wolter, Giuseppe Verde, Z. Matthews, S. Pirrone, Z. Chajecki, Maria Colonna, M. B. Tsang, J. Łukasik, F. Amorini, F. Rizzo, Abdulrahman Alajlan, Triestino Minniti, P. Cammarata, Marielle Chartier, Chiara Guazzoni, A. Budzanowski, Zbigniew Sosin, Qingfeng Li, L. Grassi, B. Czech, Martin Veselsky, F. Riccio, W. G. Lynch, N. Kurz, Vincenzo Greco, Yvonne Leifels, M. Boisjoli, Attila Krasznahorkay, Sherry Yennello, L. Stuhl, Herbert A. Simon, Mariano Vigilante, W. Trautmann, P. Russotto, S. Al-Homaidhi, W. Reisdorf, F. Porto, A. Wieloch, P. Wigg, E. La Guidara, K. Kezzar, I. Skwirczyńska, L. Zetta, Paola Marini, M. Kiš, M. Zoric, Igor Gašparić, G. Lanzalone, R. Pleskac, Elio Rosato, Angelo Pagano, M. D. Cozma, Lauren Heilborn, L. Acosta, E. De Filippo, Riccardo Introzzi, Roy Crawford Lemmon, S. Gannon, D. Rossi, M. Di Toro, C. Boiano, S. Kupny, G. Cardella, Michele Papa, M. Adamczyk, J. Benlliure, Rene Reifarth, P. Z. Wu, A. Trifirò, Yassid Ayyad, Matthias Heil, Ivano Lombardo, M. Al-Garawi, Tadaaki Isobe, P. Guazzoni, Michael Famiano, M. Trimarchi, R. Bassini, A. Le Fèvre, Thomas Aumann, J. Brzychczyk, Lucrezia Auditore, G. Politi, L. W. May, K. Boretzky, M. Mostazo, S. Santoro, P. Lasko, V. Baran, P. Zambon, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-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), 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), Greco, V., 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., Aukasik, J., Marini, P., Pawłowski, P., Trautmann, W., 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., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., 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., Santoro, S., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Veselsky, M., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Greco, Vincenzo, La Cognata, M., Pirrone, Sara, Rizzo, Francesca, Spitaleri, Claudio, and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
DENSITY-DEPENDENCE, COLLISIONS, heavy ion: scattering, energy: symmetry, QC1-999, Hadron, Nuclear Theory, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Ion, Nuclear physics, Physics and Astronomy (all), quantum molecular dynamics: relativistic, symmetry energy, neutron flow, nuclear equation of state, heavy-ion scattering, relativistic quantum molecular dynamics, Darmstadt GSI FAIR, density dependence, transport theory, elliptic flow, 0.4 GeV/nucleon, 0103 physical sciences, Neutron, 010306 general physics, PROBE, Nuclear Experiment, numerical calculations, DETECTOR, Physics, density, DENSITY-DEPENDENCE, SYMMETRY ENERGY, COLLISIONS, FRAGMENTATION, DETECTOR, NEUTRON, PROBE, sezele, 010308 nuclear & particles physics, Elliptic flow, SYMMETRY ENERGY, charged particle, Charged particle, Baryon, n: flow, NEUTRON, Atomic physics, FRAGMENTATION, Nucleon, nucleus: equation of state
Abstract

International audience; The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. In the ASY-EOS experiment at the GSI laboratory, flows of neutrons and light charged particles were measured for ^197Au+^197Au collisions at 400 MeV/nucleon. Flow results obtained for the Au+Au system, in comparison with predictions of the UrQMD transport model, confirm the moderately soft to linear density dependence of the symmetry energy deduced from the earlier FOPI-LAND data.

Published
2016
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46. Coulomb chronometry to probe the decay mechanism of hot nuclei

Author

N. Le Neindre, P. N. Nadtochy, Giuseppe Verde, I. Lombardo, Mariano Vigilante, O. Lopez, M.F. Rivet, G. Ademard, G. Spadaccini, B. Borderie, L. Manduci, Paola Marini, Diego Gruyer, M. Pârlog, J.D. Frankland, R. Bougault, E. Vient, P. Lautesse, J.P. Wieleczko, J. Gauthier, E. Rosato, René Roy, E. Legouée, D. Guinet, E. Galichet, K. Mazurek, Eric Bonnet, A. Chbihi, M. Boisjoli, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Université Laval [Québec] (ULaval), 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), University of Naples Federico II = Università degli studi di Napoli Federico II, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Istituto Nazionale di Fisica Nucleare (INFN), Ecole des applications militaires de l'énergie atomique (EAMEA), H.Niewodniczanski Institute of Nuclear Physics, Omsk State University, Istituto Nazionale di Fisica Nucleare, Sezione di Catania (INFN), Università degli studi di Catania = University of Catania (Unict), INDRA, 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)-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)-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), Università degli studi di Napoli Federico II, Università degli studi di Catania [Catania], Gruyer, Diego., Frankland, J. D., Bonnet, E., Chbihi, A., Ademard, G., Boisjoli, M., Borderie, B., Bougault, R., Galichet, E., Gauthier, J., Guinet, D., Lautesse, P., Le Neindre, N., Legouée, E., Lombardo, I., Lopez, O., Manduci, L., Marini, P., Mazurek, K., Nadtochy, P. N., Pârlog, M., Rivet, M. F., Roy, R., Rosato, E., Spadaccini, G., Verde, G., Vient, E., Vigilante, M., and Wieleczko, J. P.

Subjects
Physics, Nuclear and High Energy Physics, incomplete fusion, time scale, Binary number, FOS: Physical sciences, three-fragment correlations, low and intermediate energy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 3. Good health, Cross section (physics), 25.70.-z, 06.30.Ft, 25.70.Jj, 25.70.Pq, onset of multifragmentation, Coulomb, sequential fission, Atomic physics, Nuclear Experiment (nucl-ex), heavy-ion reactions, Nuclear Experiment, chronometer, Excitation, multifragmentation threshold, Chronometry
Abstract

In 129 Xe+ nat Sn central collisions from 8 to 25 MeV/A, the three-fragment exit channel occurs with a significant cross section. We show that these fragments arise from two successive binary splittings of a heavy composite system. The sequence of fragment production is determined. Strong Coulomb proximity effects are observed in the three-fragment final state. A comparison with Coulomb trajec-tory calculations shows that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming quasi-simultaneous above excitation energy E * = 4.0$\pm$0.5 MeV/A. This transition from sequential to simultaneous break-up was interpreted as the signature of the onset of multifragmentation for the three-fragment exit channel in this system., Comment: 12 pages; 13 Figures; 4 Table; Accepted for publication in Physical Review C

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

Author

P. Russotto, M. Chartier, M.D. Cozma, E. De Filippo, A. Le Fèvre, S. Gannon, I. Gašparić, M. Kiš, S. Kupny, Y. Leifels, R.C. Lemmon, Q. Li, J. Łukasik, P. Marini, P. Pawłowski, W. Trautmann, 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, R. Bassini, J. Benlliure, C. Boiano, M. Boisjoli, K. Boretzky, J. Brzychczyk, A. Budzanowski, G. Cardella, P. Cammarata, Z. Chajecki, A. Chbihi, M. Colonna, B. Czech, M. Di Toro, M. Famiano, V. Greco, L. Grassi, C. Guazzoni, P. Guazzoni, M. Heil, L. Heilborn, R. Introzzi, T. Isobe, K. Kezzar, A. Krasznahorkay, N. Kurz, E. La Guidara, G. Lanzalone, P. Lasko, I. Lombardo, W.G. Lynch, Z. Matthews, L. May, T. Minniti, M. Mostazo, A. Pagano, M. Papa, S. Pirrone, R. Pleskac, G. Politi, F. Porto, R. Reifarth, W. Reisdorf, F. Riccio, F. Rizzo, E. Rosato, D. Rossi, S. Santoro, H. Simon, I. Skwirczynska, Z. Sosin, L. Stuhl, A. Trifirò, M. Trimarchi, M.B. Tsang, G. Verde, M. Veselsky, M. Vigilante, A. Wieloch, P. Wigg, H.H. Wolter, P. Wu, S. Yennello, P. Zambon, L. Zetta, M. Zoric, Borderie, B., Russotto, P., Chartier, M., Cozma, M. D., De Filippo, E., Le Fever, A., Gannon, S., Gǎsparíc, I., Kǐs, M., Kupny, S., Leifels, Y., Lemmon, R. C., Li, Q., Lukasik, J., Marini, P., Pawlowski, P., Trautmann, W., 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, R., 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., Santoro, S., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifiro, A., Trimarchi, M., Tsang, M. B., Verde, G., Veselsky, M., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-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), 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 and Astronomy (all), sezele, Physics, QC1-999, Nuclear Theory, ddc:530, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; The elliptic-flow ratio of neutrons with respect to protons or lightcomplex particles in reactions of heavy ions at pre-relativistic energieshas been proposed as an observable sensitive to the strength of thesymmetry term of the nuclear equation of state at supra-saturationdensities. In the ASY-EOS experiment at the GSI laboratory, flows ofneutrons and light charged particles were measured for 197Au+197Au,96Zr+96Zr and 96Ru+96Ru collisions at 400 MeV/nucleon with theLarge Area Neutron Detector LAND as part of a setup with severaladditional detection systems used for the event characterization. Flowresults obtained for the Au+Au system, in comparison with predictionsof the UrQMD transport model, confirm the moderately soft to lineardensity dependence of the symmetry energy deduced from the earlierFOPI-LAND data.

Published
2015
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48. Recent results from INDRA

Author

J.D. Frankland, N. Le Neindre, O. Lopez, Elio Rosato, E. Bonnet, R. Bougault, G. Spadaccini, A. Chbihi, J.P. Wieleczko, Ivano Lombardo, E. Legouée, Giuseppe Verde, M. La Commara, E. Vient, M. Boisjoli, René Roy, M.F. Rivet, G. Ademard, L. Manduci, D. Gruyer, Bernard Borderie, Mariano Vigilante, E. Galichet, Paola Marini, M. Pârlog, 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), 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 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), Conservatoire National des Arts et Métiers [CNAM] (CNAM), Ecole des applications militaires de l'énergie atomique (EAMEA), INDRA Collaboration, GANILEXP, 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), Normandie Université (NU)-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), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Borderie, B., Chbihi, A., Frankland, Jd., Lopez, O., Boisjoli, M., Bonnet, E., Gruyer, D., Marini, P., Ademard, G., Rivet, M. -F., Verde, G., Bougault, R., Galichet, E., La Commara, M., Le Neindre, N., Legoúee, E., Lombardo, I., Manduci, L., Parlog, M., Rosato, E., Roy, R., Spadaccini, G., Vient, E., Vigilante, M., and Wieleczko, Jp.

Subjects
Physics, 010308 nuclear & particles physics, QC1-999, Nuclear equation of state, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, Symmetry (physics), Term (time), Nuclear physics, Physics and Astronomy (all), Reaction dynamics, Transparency (graphic), 0103 physical sciences, Statistical physics, 010306 general physics, Nuclear Experiment
Abstract

International audience; Recent results of the INDRA collaboration are presented in thiscontribution. They concern the evolution of reaction dynamics fromthe first stage of the collision to the production of fragments. Differentprobes are used to evidence the stopping/transparency, collective flowand the symmetry energy term of the nuclear equation of state.

Published
2014
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49. 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
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50. HIV-1 promotes ubiquitination of the amyloidogenic C-terminal fragment of APP to support viral replication.

Author

Gu F, Boisjoli M, and Naghavi MH

Subjects
Amyloid Precursor Protein Secretases metabolism, Ubiquitination, Virus Replication, Amyloid beta-Peptides metabolism, Amyloid beta-Protein Precursor genetics, Amyloid beta-Protein Precursor metabolism, HIV-1 metabolism
Abstract

HIV-1 replication in macrophages and microglia involves intracellular assembly and budding into modified subsets of multivesicular bodies (MVBs), which support both viral persistence and spread. However, the cellular factors that regulate HIV-1's vesicular replication remain poorly understood. Recently, amyloid precursor protein (APP) was identified as an inhibitor of HIV-1 replication in macrophages and microglia via an unknown mechanism. Here, we show that entry of HIV-1 Gag into MVBs is blocked by the amyloidogenic C-terminal fragment of APP, "C99", but not by the non-amyloidogenic product, "C83". To counter this, Gag promotes multi-site ubiquitination of C99 which controls both exocytic sorting of MVBs and further processing of C99 into toxic amyloids. Processing of C99, entry of Gag into MVBs and release of infectious virus could be suppressed by expressing ubiquitination-defective C99 or by γ-secretase inhibitor treatment, suggesting that APP's amyloidogenic pathway functions to sense and suppress HIV-1 replication in macrophages and microglia., (© 2023. The Author(s).)

Published
2023
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