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, J.p., 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., et al.. - 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;
2016-01-01
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.
