EPJ Web of Conferences
Volume 66, 2014INPC 2013 – International Nuclear Physics Conference
|Number of page(s)
|20 March 2014
Exploring reaction mechanisms and their competition in 58Ni+48Ca collisions at E = 25 AMeV
1 INFN Laboratori Nazionali del Sud – LNS, Catania, Italy
2 Dipartimento di Fisica, Università di Catania, Italy
3 INFN Sezione di Catania, Italy
4 INFN Sezione di Trieste, Italy
5 Dipartimento di Fisica, Università di Firenze, INFN Sezione di Firenze, Italy
6 LPC Caen, IN2P3-CNRS/ENSICAEN and Université, F-14050 Caen cedex, France
7 Dipartimento di Fisica, Università di Bologna and INFN Sezione di Bologna, Italy
8 INFN, Sezione di Firenze, Italy
9 Dipartimento di Fisica, Università di Milano and INFN Sezione di Milano, Italy
10 INFN Laboratori Nazionali di Legnaro, Italy
11 Centro Siciliano di Fisica Nucleare e Struttura della Materia, Catania, Italy
12 Università Kore, Enna, Italy
a Laura Francalanza: firstname.lastname@example.org
Published online: 20 March 2014
Latest results concerning the study of central collisions in 58Ni+48Ca reactions at Elab(Ni)=25 AMeV are presented. The experimental data, collected with the CHIMERA 4π device, have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain. The method adopted to perform the centrality selection refers to the global variable “flow angle”, that is related to the event shape in momentum space, as it is determined by the eigenvectors of the experimental kinetic-energy tensor. The main features of the reaction products were explored by using different constraints on some of the relevant observables, such as mass and velocity distributions and their correlations. Much emphasis was devoted to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a prompt multifragmentation mechanism. The reaction mechanism was simulated in the framework of transport theories (dynamical stochastic BNV calculations, followed by sequential SIMON code) and further comparison with dynamical calculations from transport model (QMD, CoMD) are in progress. Moreover, an extension of this study taking into account for the light particles has been envisaged.
© Owned by the authors, published by EDP Sciences, 2014
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