N/Z effect on reaction mechanisms cross sections in the $^{78}Kr+^{40}Ca$ and $^{86}Kr+^{48}Ca$ collisions at 10 A MeV

B. Gnoffo , S. Pirrone , G. Politi , M. La Commara , J. P. Wieleczko (1) , E. de Filippo , P. Russotto , M. Trimarchi , M. Vigilante , G. Ademard (2) , L. Auditore , C. Beck (3) , I. Bercenau , E. Bonnet (1) , B. Borderie (2) , G. Cardella , A. Chbihi (1) , M. Colonna , S. de Luca , D. Dell'Aquila , A. d'Onofrio , J.D. Frankland (1) , G. Lanzalone , P. Lautesse (4) , D. Lebhertz (1) , N. Le Neindre (5) , I. Lombardo , N.S. Martorana , K. Mazurek (1) , S. Norella , A. Pagano , E.V. Pagano , M. Papa , E. Piasecki , F. Porto , L. Quattrocchi , F. Rizzo , G. Spadaccini , A. Trifirò , G. Verde

1 GANIL - Grand Accélérateur National d'Ions Lourds
2 IPNO - Institut de Physique Nucléaire d'Orsay
3 IPHC - Institut Pluridisciplinaire Hubert Curien
4 IPNL - Institut de Physique Nucléaire de Lyon
5 LPCC - Laboratoire de physique corpusculaire de Caen

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 78Kr + 40Ca and 86Kr + 48Ca at 10 MeV/A is presented. The experiment has been performed at Laboratori Nazionali del Sud by using the CHIMERA 4π multidetector 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-poor system are compared to those obtained at GANIL, performed at 5.5 A MeV, in order to study the energy influence on the mechanisms.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

B. Gnoffo, S. Pirrone, G. Politi, M. La Commara, J. P. Wieleczko, et al.. N/Z effect on reaction mechanisms cross sections in the $^{78}Kr+^{40}Ca$ and $^{86}Kr+^{48}Ca$ collisions at 10 A MeV. International Workshop on Multi facets of EoS and Clustering, May 2016, Caen, France. pp.403, ⟨10.1393/ncc/i2016-16403-x⟩. ⟨hal-02058484⟩