1. First results from the INDRA-FAZIA apparatus on isospin diffusion in $^{58,64}Ni+^{58,64}Ni$ systems at Fermi energies
- Author
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Ciampi, C., Piantelli, S., Casini, G., Pasquali, G., Quicray, J., Baldesi, L., Barlini, S., Borderie, B., Bougault, R., Camaiani, A., Chbihi, A., Dell'Aquila, D., Cicerchia, M., Dueñas, J.A., Fable, Q., Fabris, D., Frankland, J.D., Frosin, C., Génard, T., Gramegna, F., Gruyer, D., Hahn, K.I., Henri, M., Hong, B., Kim, S., Kordyasz, A., Kozik, T., Kweon, M.J., Lemarié, J., Le Neindre, N., Lombardo, I., Lopez, O., Marchi, T., Nam, S.H., Ordine, A., Ottanelli, P., Park, J., Park, J.H., Pârlog, M., Poggi, G., Rebillard-Soulié, A., Stefanini, A.A., Upadhyaya, S., Valdré, S., Verde, G., Vient, E., Vigilante, M., 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), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-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 des deux Infinis de Toulouse (L2IT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and INDRA-FAZIA
- Subjects
Nuclear Theory (nucl-th) ,[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] ,Nuclear Theory ,FOS: Physical sciences ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
International audience; An investigation of the isospin equilibration process in the reactions Ni58,64+Ni58,64 at two bombarding energies in the Fermi regime (32 and 52 MeV/nucleon) is presented. Data have been acquired during the first experimental campaign of the coupled INDRA-FAZIA apparatus in GANIL. Selecting from peripheral to semicentral collisions, both the neutron content of the quasiprojectile residue and that of the light ejectiles coming from the quasiprojectile evaporation have been used as probes of the dynamical process of isospin diffusion between projectile and target for the asymmetric systems. The isospin transport ratio technique has been employed. The relaxation of the initial isospin imbalance with increasing centrality has been clearly evidenced. The isospin equilibration appears stronger for the reactions at 32 MeV/nucleon, as expected due to the longer projectile-target interaction time than at 52 MeV/nucleon. Coherent indications of isospin equilibration come from the quasiprojectile residue characteristics and from particles ascribed to the quasiprojectile decay.
- Published
- 2022