Transition from quasielastic to damped processes in the 32S+64Ni reaction.

Abstract

Measurements of ..gamma..-ray multiplicity in coincidence with the projectile-like fragments from inelastic collision of /sup 32/S on /sup 64/Ni at 160.5 MeV lab bombarding energy are reported. The experimental multiplicity increases with increasing total kinetic energy loss and shows a plateau above /similar to/15 MeV while the angular distributions of the projectile-like fragments exhibit an evolution in the shape around the same energy. These effects seem to indicate a transition mechanism from quasielastic to more damped processes that, in medium nuclei, occurs at low energy losses although some features of a direct reaction are still retained.