Abstract
The longitudinal velocity and isotopic distributions of forward emitted fragments have been measured in the 11 B (32.9 AMeV ) + 9 Be (27 Al ,197 Au ) reactions. The range of isotopes from Helium to Nitrogen has been observed. The particular interest of this experiment has been to investigate the influence of direct and dissipative processes on the fragment production for different targets. The fast velocity component characterized by a Gaussian shape is rather well described in the frame of simple statistical fragmentation model, but with smaller value of the width of the distribution. Isotopic and velocity distributions have been compared to Universal Parameterization model implemented in the LISE + + code. Increased yields of 4 He and 7 Li isotopes are observed as a possible influence of the cluster structure of the 11 B nuclei on the total reaction mechanisms.
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