RT Journal Article
T1 Quasiprojectile breakup and isospin equilibration at Fermi energies: an indication of longer projectile-target contact times?
A1 Ciampi, Caterina
A1 Dueñas Díaz, José Antonio
A1 Vigilante, M.
AB An investigation of the quasiprojectile breakup channel in semiperipheral and peripheral collisions of 58,64Ni+58,64Ni at 32 and 52 MeV/nucleon is presented. Data have been acquired in the first experimental campaign of the INDRA-FAZIA apparatus in GANIL. The effect of isospin diffusion between projectile and target in the two asymmetric reactions has been highlighted by means of the isospin transport ratio technique, exploiting the neutron-to-proton ratio of the quasiprojectile reconstructed from the two breakup fragments. We found evidence that, for the same reaction centrality, a higher degree of relaxation of the initial isospin imbalance is achieved in the breakup channel with respect to the more populated binary output, possibly indicating the indirect selection of specific dynamical features. We have proposed an interpretation based on different average projectile-target contact times related to the two exit channels under investigation, with a longer interaction for the breakup channel. The time information has been extracted from AMD simulations of the studied systems coupled to Gemini++: the model calculations support the hypothesis hereby presented.
PB American Physical Society
SN 2469-9985
SN 2469-9993 (electrónico)
YR 2023
FD 2023
LK https://hdl.handle.net/10272/23227
UL https://hdl.handle.net/10272/23227
LA eng
NO Ciampi, C., Piantelli, S., Casini, G., Ono, A., Frankland, J. D., Baldesi, L., Barlini, S., Borderie, B., Bougault, R., Camaiani, A., Chbihi, A., Dueñas, J. A., Fable, Q., Fabris, D., Frosin, C., Génard, T., Gramegna, F., Gruyer, D., … Henri, M. (2023). Quasiprojectile breakup and isospin equilibration at Fermi energies: Potential indication of longer projectile-target contact times. In Physical Review C (Vol. 108, Issue 5). American Physical Society (APS). https://doi.org/10.1103/physrevc.108.054611
NO Preprint
NO This work was in part supported by the National Research Foundation of Korea (NRF; Grant No.2018R1A5A1025563),by the Institute o f Basic Science, Republic of Korea (IBS; Grant No. IBS-R031D1)and by the Spanish Ministerio de Economía y Empresa(PGC2018-096994-B-C22).We acknowledge support from Région Normandie under Réseau d’Intérêt Normand FIDNEOS(RIN/FIDNEOS).Many thanks are due to the accelerator staff of GANIL for deliverin ga very good quality beam and to the technical stafff ort he continuous support.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026