Extended Sum-Rule Model for Intermediate Mass-Fragment Emission

摘要

A survey is given on the basis of sum-rule models describing the intermediate mass-fragment emission in light and heavy ion reactions. The original sum-rule worked out by Wilczynski et al. has been extended by a term accounting for the dynamical behavior of the dinuclear system and dependent on the critical value of the orbital angular momentum for the fusion with dissipation. This term proves to be rather essential in reproducing the Z-distribution of the fragments emitted from rather asymmetric systems. The features of the model are demonstrated by applying it to /sup 40/Ar+/sup nat/Ag, /sup 40/Ar+/sup 154/Sm, /sup 40/Ar+/sup 197/Au, /sup 40/Ar+/sup 232/Th (E=336 MeV), and to /sup 6/Li+/sup 46/Ti, /sup 6/Li+/sup nat/Cu, /sup 6/Li+/sup nat/Ag (E=156 MeV) reactions. (ERA citation 14:016508)