The self-consistent analysis for sub-barrier fusion enhancement effect in Ca + Ca and Ni + Ni

TL;DR

This paper develops a self-consistent analysis method based on CCFULL calculations to study the impact of positive Q-value neutron transfer channels on sub-barrier fusion enhancement in Ca + Ca and Ni + Ni systems.

Contribution

It introduces a unified, self-consistent approach to analyze sub-barrier fusion, quantitatively confirming the role of PQNT channels in fusion enhancement.

Findings

PQNT channels significantly enhance fusion near the Coulomb barrier.

The self-consistent method effectively reproduces experimental fusion data.

Quantitative analysis confirms the impact of neutron transfer channels.

Abstract

The fusion dynamic mechanism of heavy-ions at energies near the Coulomb barrier is complicated and still not very clear up to now. Accordingly, a self-consistent method based on the CCFULL calculations has been developed and applied for an ingoing study of the effect of the positive Q-value neutron transfer (PQNT) channels in this work. The typical experimental fusion data of Ca + Ca and Ni + Ni is analyzed within the unified calculation scheme. The PQNT effect in near-barrier fusion is further confirmed based on the self-consistent analysis and extracted quantitatively.