ENTRANCE CHANNEL EFFECT IN 82Sr* USING DYNAMIC CLUSTER DECAY MODEL

Abstract

In view of present day developments in the domain of nuclear physics, it is extremely important & essential to study the nuclear properties and related phenomena at the extreme conditions of temperature, angular momentum & energies in order to respond the exotic experimentations being conducted & planned in near future. In order to meet such challenges, it becomes extremely essential to update the standard of theoretical computations in order to make meaningful predictions in the related field. In the last six decades since the discovery of nuclear fission, extensive theoretical and experimental investigations have been carried out to understand the various aspects of fusion-fission dynamics. One of the important feature in the domain of fission fusion in the concept & importance of entrance channel effects. It is therefore important to account for the entrance channel properties of target and projectile in order to study the fusion-fission dynamics. Keeping this in mind, I have investigated the entrance channel effects in decay of 82Sr* formed in 16O+66Zn (Asymmetric) and 37Cl+45Sc (Symmetric) reactions. It is well established fact that the parameters which result in entrance channel effects are the barrier distribution, angular momentum anisotropies, mass asymmetry and nuclear deformations. The barrier distribution is due to presence of range of nuclear potentials across barrier and vibrations associated with projectile and target nucleus. Variation in angular momentum distribution results in different fission products. The deformations present in nuclear shapes results in different cross sections for interacting nucleus of target and projectile. Mass asymmetry factor also result in different type of fission fragments on decay of compound nucleus. For the present study, I have used Dynamical Cluster Decay Model (DCM), which is a very vibrant model to account for nuclear fission dynamics in general & nuclear structure in particular. Our calculations clearly indicate that the entrance channel effect is extremely important parameter in deciding fission dynamic of a compound nucleus.