Effects of nonlocality of nuclear potentials on direct capture reactions

TL;DR

This paper investigates how the nonlocality of nuclear potentials affects direct capture reaction calculations, showing that nonlocality can alter cross sections by approximately 25%, and improves agreement with experimental data.

Contribution

It introduces the use of Perey-Buck nonlocal potentials in direct capture reaction calculations and compares results with local potentials to assess nonlocality effects.

Findings

Nonlocal potentials can change reaction cross sections by about 25%.

Results align reasonably well with experimental data.

Nonlocality should be considered for accurate nuclear reaction modeling.

Abstract

Calculations of the direct radiative capture reactions are made for the $^{48}$Ca$(n,\gamma)^{49}$Ca, $^7$Li$(n,\gamma)^8$Li and $^{12}$C$(p,\gamma)^{13}$N reactions with the Perey-Buck type nonlocal potentials using a potential model. Our results reproduce the experimental data reasonably well. From comparisons with results obtained by using local potentials, it is found that the cross sections of direct capture reactions may change by around 25\% due to the nonlcality of nuclear potentials.