Neutron scattering off spherical nuclei with global nonlocal dispersive optical model

2024/03/09 by Benjamin Morillon, Morillon, B., G. Blanchon +5
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Quantum, superfluid, helium dynamics #Pulsars and Gravitational Waves Research

paper · pdf · doi:10.48550/arxiv.2403.05843

Abstract

We present a global nonlocal and dispersive optical model potential for neutron scattering off spherical nuclei with incident energies up to 250 MeV. This optical model is an extension of the non-dispersive Perey-Buck potential. The imaginary components are chosen energy-dependent and the dispersive constraints are taken into account. The surface imaginary part is nonlocal, whereas the volume imaginary part above 10 MeV is local, allowing to reproduce total cross sections and scattering data for high energies. We obtain a good description of scattering observables for target-nuclei ranging from A=16, up to 209. The inclusion of nonlocal spin-orbit term enables a better description of the analyzing power data relative to the local dispersive model.

Related

• Linking nuclear reactions and nuclear structure to study exotic nuclei using the dispersive optical model
• Neutron skins: A perspective from dispersive optical models
• Progress in the Development of Global Medium-Energy Nucleon-Nucleus Optical Model Potentials
• Single-particle structure of the semi-magic nucleus ⁹⁰Zr from a nonlocal dispersive optical model
• Nuclear cross sections from low-energy interactions