Size and asymmetry of the reaction entrance channel: Influence on the probability of neck production

✍ Scribed by P.M. Milazzo; G. Vannini; C. Agodi; R. Alba; G. Bellia; N. Colonna; R. Coniglione; A. Del Zoppo; P. Finocchiaro; F. Gramegna; I. Iori; C. Maiolino; G.V. Margagliotti; P.F. Mastinu; E. Migneco; A. Moroni; P. Piattelli; R. Rui; D. Santonocito; P. Sapienza

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 225 KB
• Volume: 756
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2005.03.006

✦ Synopsis

The results of experiments performed to investigate the Ni + Al, Ni + Ni, Ni + Ag reactions at 30 MeV/nucleon are presented. From the study of dissipative midperipheral collisions, it has been possible to detect events in which intermediate mass fragments (IMF) production takes place. The decay of a quasi-projectile has been identified; its excitation energy leads to a multifragmentation totally described in terms of a statistical disassembly of a thermalized system (T 4 MeV, E * 4 MeV/nucleon). Moreover, for the systems Ni + Ni, Ni + Ag, in the same nuclear reaction, a source with velocity intermediate between that of the quasi-projectile and that of the quasi-target, emitting IMF, is observed. The fragments produced by this source are more neutron rich than the * Corresponding author.