Nuclear reactions between medium-mass nuclei at low bombarding energy are characterized by the competition between binary and evaporation processes in the compound nucleus decay. A study of the influence of the neutron richness of the entrance channel on the decay paths of the compound nuclei formed in the Kr-78 + Ca-40 and Kr-86 + Ca-48 at 10 MeV/A is presented. The experiment has been performed at Laboratori Nazionali del Sud by using the CHIMERA 4 pi multi-detector for charged particles. The kinematical characteristics of the two reactions support the conclusion of a production of the IMFs via long-lived system and the global features suggest a different competition among the various reaction channels. The cross sections of the mechanisms responsible for the fragments production have been extracted. Besides the results relative to the n-poorsystem are compared to those obtained at GANIL, performed at 5.5 A MeV, in order to study the energy influence on the mechanisms.
N/Z effect on reaction mechanisms cross sections in the 78Kr + 40Ca and 86Kr + 48Ca collisions at 10A MeV / Gnoffo, B; Pirrone, S; Politi, G; La Commara, M; Wieleczko, Jp; De Filippo, E; Russotto, P; Trimarchi, M; Vigilante, M; Ademard, G; Auditore, L; Beck, C; Bercenau, I; Bonnet, E; Borderie, B; Cardella, G; Chibihi, A; Colonna, M; De Luca, S; Dellaquila, D; D'Onofrio, A; Frankland, Jd; Lanzalone, G; Lautesse, P; Lebhertz, D; Le Neidre, N; Lombardo, I; Martorana, Ns; Mazurek, K; Norella, S; Pagano, A; Pagano, Ev; Papa, M; Piasecki, E; Porto, F; Quattrocchi, L; Rizzo, F; Spadaccini, G; Trifiro, A; Verde, G. - In: IL NUOVO CIMENTO C. - ISSN 2037-4909. - 39:6(2016). [10.1393/ncc/i2016-16403-x]
N/Z effect on reaction mechanisms cross sections in the 78Kr + 40Ca and 86Kr + 48Ca collisions at 10A MeV
DELLAQUILA D;
2016
Abstract
Nuclear reactions between medium-mass nuclei at low bombarding energy are characterized by the competition between binary and evaporation processes in the compound nucleus decay. A study of the influence of the neutron richness of the entrance channel on the decay paths of the compound nuclei formed in the Kr-78 + Ca-40 and Kr-86 + Ca-48 at 10 MeV/A is presented. The experiment has been performed at Laboratori Nazionali del Sud by using the CHIMERA 4 pi multi-detector for charged particles. The kinematical characteristics of the two reactions support the conclusion of a production of the IMFs via long-lived system and the global features suggest a different competition among the various reaction channels. The cross sections of the mechanisms responsible for the fragments production have been extracted. Besides the results relative to the n-poorsystem are compared to those obtained at GANIL, performed at 5.5 A MeV, in order to study the energy influence on the mechanisms.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
