Relevance of different Skyrme forces in the dynamics of [formula omitted] reactions

Abstract

The role of different Skyrme forces and associated neutron transfer effect is investigated in the view of Ca40,48+96Zr reactions. The fusion cross section has been calculated using Wong formula and extended Wong model, wherein neutron transfer effect is studied by scaling the transmission probability of contributing channel(s). The decay analysis is carried out in the framework of dynamical cluster decay model, where the neck length ΔR and corresponding barrier modification ΔVB are used to explore the neutron transfer effect in the decaying fragments. For fusion and subsequent decay, the nuclear proximity potential is calculated using Skyrme interactions such as SIII, GSkI, SkT1, SkT2, and SkT3. In Ca40+96Zr case, the fusion hindrance is observed at sub barrier energies for the use of SIII, SkT1, SkT2 Skyrme forces. The cross sections are improved to some extent for GSkI force. Further, the inclusion of 1n-transfer channel in the calculations shows that the experimental data is adequately addressed for GSkI force, however, the correction of 1n-transfer channel for SkT1 (or SIII, SkT2 forces), persists with the poor fit to experimental data. In the decay analysis, the interaction potentials significantly affect the structural properties of decaying fragments as is clear from the fragmentation potential and preformation probability. Both, the fusion and decay analysis consistently advocate that GSkI force comprising of extended density-dependent term is able to address the sub barrier anomalies. The neutron transfer effect is explored in view of different choices of the Skyrme forces, which shows that the forces with higher barrier lead to more neutron transfer channel effect and vice versa.