A Study of Exotic Compound Nuclear Systems and Subsequent Fragment Emission Using Skyrme Energy Density Formalism

Abstract

In this thesis, the formation and subsequent decay mechanisms of compound nuclear systems induced via heavy-ion reactions have been studied at the low-energy regime. For this analysis, the nucleus-nucleus interaction potential derived using the semiclassical SEDF approach is considered as a tool to estimate the fusion barrier characteristics, which are used as input to calculate the fusion cross-sections witih the Wong formula (and its extended version) for incident energies lying across the Coulomb barrier. Additionally, the influence of different density distribution functions and approximations employed within the SEDF approach has been studied in view of the fusion barrier characteristics and the fusion crosssections. For comparative analysis, the phenomenological potentials, like Prox77, Pox88 and Woods-Saxon etc., are considered and analyzed the corresponding influence in nuclear fusion dynamics. Further, to study the subsequent decay mechanisms of the formed compound nucleus (CN), the mass and charge distributions of excited CN have been examined within the framework of collective clusterization approach of Dynamical Cluster-decay Model (DCM). The model based on the Quantum Mechanical Fragmentation Theory (QMFT). In the fusion-fission dynamics of heavy-ion induced reactions, the role of deformations (to octupole and#946;3 deformation) and corresponding optimum orientations has also been investigated. In view of above, the present thesis is divided into eight chapters, which are briefly described as: Chapter 1 begins with the basic understandings related to the subatomic particles and their interactions with the other nuclei, taken place at the low-energy regime (beam energy and#8804; 15 MeV/nucleon). In the present thesis to study the nucleus-nucleus interactions, the heavy-ion (with mass and charge numbers and#8805; to that of 42 He nucleus) reactions are taken into consideration. Later, the theoretical models developed to study the heavy-ion collisions are discussed.