Fragmentation Analysis of 88Mo* Compound Nucleus in View of Different Decay Mechanisms

Abstract

In order to study the decay dynamics associated with 48Ti+ 40Ca reaction, investigation are carried at three beam energies (Ebeam=300,450 and 600 MeV) using Collective Clusterization approach of Dynamical Cluster Decay Model (DCM). Calculations are done for spherical and deformed choice of fragments having optimum orientations (θiopt). According to the experimental evidence, 88Mo* decays via Fusion-Evaporation (FE) and Fusion-Fission (FF) processes, thus the decay cross-sections of this hot and rotating compound system are calculated for both FE and FF channels. This dissertation is focused on following three chapters. Chapter-1: Chapter-1 includes the basic introduction about nuclear reaction dynamics including its applications and benefits to mankind. In addition to this, various mathematical models dealing with reaction dynamics and related structural properties are briefly discussed here. Furthermore, nuclear reactions and their types on the basis of distinct parameters like energy, mass and compound nucleus formation etc. are enlightened. Besides this, a description of compound nucleus formation and its successive decay mechanisms is briefly outlined in view of dynamical evolution of heavy ion nuclear reactions at low energy regime. Chapter-2: Chapter-2 consists of the theoretical formalism used to understand reaction dynamics of 88Mo* compound nucleus. The Dynamical Cluster-Decay Model (DCM) is used to analyze the fragmentation behavior for Fusion-Evaporation as well as Fusion-Fission decay processes. 9 Chapter-3: Chapter-3 gives an account of the analysis of the Fusion-Evaporation and Fusion-Fission decay patterns of 88Mo* compound nucleus, within DCM framework. The results obtained & the conclusions drawn are duly discussed. Calculations are done over a wide range of incident beam energies and DCM based cross-sections are found in decent agreement with available experimental data.