An isospin dependent global nucleon-nucleus optical model at intermediate energies

TL;DR

This paper presents a new isospin-dependent global nucleon-nucleus optical potential that accurately models elastic scattering for a wide range of nuclei and energies, useful for exotic beam experiments.

Contribution

The paper introduces a novel isospin-dependent optical potential applicable from 30 to 160 MeV, improving modeling of proton and neutron scattering across multiple isotopes.

Findings

Replicates experimental scattering data with high accuracy.

Applicable to nuclei from carbon to nickel.

Includes isospin asymmetry terms for better isotope chain modeling.

Abstract

A global nucleon-nucleus optical potential for elastic scattering has been produced which replicates experimental data to high accuracy and compares well with other recently formulated potentials. The calculation that has been developed describes proton and neutron scattering from target nuclei ranging from carbon to nickel and is applicable for projectile energies from 30 to 160 MeV. With these ranges it is suitable for calculations associated with experiments performed by exotic beam accelerators. The potential is also isospin dependent and has both real and imaginary isovector asymmetry terms to better describe the dynamics of chains of isotopes and mirror nuclei. An analysis of the validity and strength of the asymmetry term is included with connections established to other optical potentials and charge-exchange reaction data. An on-line observable calculator is available for this optical potential.