Entrance channel effect on incomplete fusion

Abstract

In the present work, the onset and strength of incomplete fusion were studied in terms of various entrance channel parameters. Excitation functions for individual evaporation residues were measured in the 12C+169Tm system at energies from 5 to 7.5 A MeV, and analysed in the framework of the statistical model code PACE-IV to deduce the fraction of incomplete fusion. It was found that the probability of incomplete fusion increases with the incident energy as well as with the mass asymmetry of interacting partners for individual projectiles. Moreover, the critical value of the input angular momentum (`crit) obtained from the experimental cross sections was compared with that calculated using the Wilczyński formula and a slight difference has been found.