Nonlocal optical potential with core excitation in ${}^{10}\mathrm{Be}(d,p){}^{11}\mathrm{Be}$ and ${}^{11}\mathrm{Be}(p,d){}^{10}\mathrm{Be}$ reactions

TL;DR

This paper introduces a new nonlocal optical potential including core excitation for better modeling of specific nuclear reactions, demonstrating improved agreement with experimental data and consistent spectroscopic factors.

Contribution

The study develops a novel energy-independent nonlocal optical potential with core excitation, enhancing the accuracy of reaction modeling compared to previous local potential approaches.

Findings

Successfully reproduces experimental data at low energies

Determines spectroscopic factors with weak energy dependence

Shows improved predictive power over previous models

Abstract

We propose a new nonlocal form of the nucleon-nucleus optical potential and demonstrate its reliability. We extend the nonlocal potential to include the excitation of the nuclear core and develop energy-independent roton-${}^{10}\mathrm{Be}$ potential reasonably reproducing the experimental data at low energies. We apply the new potential to the study of deuteron stripping and pickup reactions ${}^{10}\mathrm{Be}(d,p){}^{11}\mathrm{Be}$ and ${}^{11}\mathrm{Be}(p,d){}^{10}\mathrm{Be}$ using rigorous three-body Faddeev-type equations for transition operators that are solved in the momentum-space partial-wave framework. The achieved description of the experimental data is considerably more successful as compared to previous studies with local potentials. The values of spectroscopic factors consistent with the data are determined, exhibiting only weak energy dependence. The results possibly indicate an increased predicting power of the proposed calculational scheme.