Comparison between the fragmentation processes in central Pb + Ag and Pb + Au collisions

✍ Scribed by B. Jouault; G. Royer; J.F. Lecolley; F. Sebille; F. Haddad

• Book ID: 104336221
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 540 KB
• Volume: 615
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(96)00477-0

✦ Synopsis

The fragmentation processes of a medium mass system and of a very massive one formed in central collisions are compared within the Landau-Vlasov model taking into account both the isospin dependence and the two-body residual interactions. The simulations predict the formation of a roughly ellipsoidal source in the central Pb + Ag reactions while, for the Pb + Au system, the fragmentation occurs from an hollow source, the configuration of which being intermediate between bubble-like and toroidal shapes. This different shapes explain and allow to reproduce semi-quantitatively the two different profiles of the experimental kinetic energy spectra. (~) 1997 Elsevier Science B.V. All rights reserved. (~) 1997 Elsevier Science B.V.