Analysis of the intermediate stage in the heavy ion interactions of 208Pb+197Au and 197Au+197Au

Two different projectiles 208Pb and 197Au at the same energy (11.67MeV/u) have been bombarded on 197Au target to study heavy ion interactions using mica as a passive detector. In this paper we present results on the study of energy damping and time scale of the existence of di-nuclear composite system in the intermediate reaction step. The plots of QQ-values as well as reaction cross sections in various angular bins of scattering angles suggest that K.E. damping was complete and dynamic equilibrium was established between the first and second reaction steps. The time scale of this duration was also determined.