Peculiarities of sub-barrier fusion with quantum diffusion approach

TL;DR

This paper uses the quantum diffusion approach to explain unusual behaviors in sub-barrier fusion, showing that fusion cross sections decrease more slowly below the barrier, aligning well with experimental data.

Contribution

It introduces the quantum diffusion approach to analyze sub-barrier fusion, revealing new insights into fusion cross section behavior at low energies.

Findings

Fusion cross section decrease rate slows below the barrier.

Calculated results agree with experimental data for spherical nuclei.

Behavior of astrophysical S-factor and angular momentum at sub-barrier energies.

Abstract

With the quantum diffusion approach the unexpected behavior of fusion cross section, angular momentum, and astrophysical S-factor at sub-barrier energies has been revealed. Out of the region of short-range nuclear interaction and action of friction at turning point the decrease rate of the cross section under the barrier becomes smaller. The calculated results for the reactions with spherical nuclei are in a good agreement with the existing experimental data.