Role of Deformations in the Decay of 286112 formed in 48Ca+238U Reaction

Abstract

In view of present day developments in the domain of nuclear physics, it is extremely important & essential to study the nuclear structure and related aspects at the extreme conditions of temperature, angular momentum, & energies in reference to the developments in theoretical & experimental nuclear physics. The tough challenges in nuclear perspective can be met only by developing and establishing clear understanding of related phenomena on the theoretical front, which could be utilized to plan and implement the predictions through experiments. A number of factors and properties influence the fusion-fission process and hence need to be handled with proper care in order to make meaningful predictions .One such aspect, which plays a significant role in fusion –fission process dynamics, is the role of deformed shapes of target, projectile and decaying fragments. It is therefore, important to account for shapes of target projectile combinations by considering proper deformation and orientation effects. Keeping this in mind, we have investigated the role of deformations in 286Uub nuclear system formed in 48Ca+238U reaction. The dynamical cluster decay model (DCM), with deformations upto hexadecapole deformations and ‘compact’ orientations included , is used to calculate the fusion evaporation residue cross-section for 3n and 4n emission in a hot fusion reaction at various incident energies ,taking proton magic number Z=126 and N=184 for super heavy region and DCM gives good description of measured fusion excitation function, σER(=σ3n+σ4n) as a function of compound nucleus excitation energy E*, within one parameter fitting , the neck length ΔR(E*).Some interesting results related to nuclear fragmentation and their possible implications in reference to temperature and angular momentum effects are addressed in this work.