Effects of nuclear deformation and neutron transfer in capture process, and origin of fusion hindrance at deep sub-barrier energies

TL;DR

This paper investigates how nuclear deformation and neutron transfer affect sub-barrier capture and fusion processes, providing insights into fusion hindrance at deep sub-barrier energies through quantum diffusion modeling.

Contribution

It introduces a quantum diffusion approach to analyze the impact of nuclear deformation and neutron transfer on sub-barrier fusion and capture, highlighting their crucial roles.

Findings

Deformation changes due to neutron exchange significantly influence sub-barrier fusion.

Comparison of calculated and measured cross sections reveals insights into fusion hindrance.

The approach helps distinguish between fusion and quasifission processes at low energies.

Abstract

The roles of nuclear deformation and neutron transfer in sub-barrier capture process are studied within the quantum diffusion approach. The change of the deformations of colliding nuclei with neutron exchange can crucially influence the sub-barrier fusion. The comparison of the calculated capture cross section and the measured fusion cross section in various reactions at extreme sub- barrier energies gives us information about the fusion and quasifission.