Microscopic optical potentials for Li isotopes

Wendi Chen,Qingbiao Shen,Weili Sun,Hairui Guo,Tao Ye,Yinlu Han,Z Ge,W Wang,Y Chen,H Zhang,N Shu

doi:10.1051/epjconf/202023903016

Abstract

The microscopic optical potentials for Li isotopes (A=6,7) without free parameter are obtained by folding the microscopic optical potentials of their internal nucleons with density distributions generated from corresponding internal wave functions of Li isotopes. An isospin-dependent nucleon microscopic optical potential based on the Skyrme nucleon-nucleon effective interaction is used as the nucleon optical potential. Shell model is employed to construct the internal wave functions of Li isotopes and derive their density distributions of internal nucleons. The Li microscopic optical potentials are used to calculate the elastic-scattering angular distributions and reaction cross sections. The results reproduce experimental data well and are comparable to those calculated by phenomenological optical model potentials in many cases.

Highlights

The microscopic optical potential (MOP) has great significance in nuclear reaction theory and astrophysics
In order to evaluate the predictive power of the MOPs, they are used to calculate the elastic-scattering angular distributions and reaction cross sections and the calculated results are compared with those calculated by a phenomenal global optical potential (GOP) and experimental data
A better agreement has been obtained by the MOP at EL≤39 MeV than the GOP, while both of them underestimate the experimental data [9] at EL=43.0 and 49.0 MeV

Summary

Introduction

The microscopic optical potential (MOP) has great significance in nuclear reaction theory and astrophysics. It is derived from nucleon-nucleon interaction theoretically and need not adjust its parameters to fit experimental data. It can give guidance for nuclear reaction, especially in the research involving interaction systems without or lack of scattering measurement. In order to evaluate the predictive power of the MOPs, they are used to calculate the elastic-scattering angular distributions and reaction cross sections and the calculated results are compared with those calculated by a phenomenal global optical potential (GOP) and experimental data.

Theoretical model

Calculated result and discussion

Conclusion