Global analysis of isospin dependent microscopic nucleon-nucleus optical potential in Dirac Bruckner Hartree-Fock approach

Abstract

The Microscopic Otical Model Potential is evaluated within a relativistic scheme which provides a natural and consistent relation between the spin-orbit part and the central part of the potential. The Dirac-Brueckner-Hartree-Fock (DBHF) approach provides such a microscopic relativistic scheme, which is based on a realistic nucleon-nucleon interaction and reproduce the saturation properties of symmetric nuclear matter without any adjustable parameter. Its solution using the projection technique within the subtracted T-matrix (STM) representation provides a reliable extension to asymmetric nuclear matter, which is important to describe the features of the isospin asymmetric nuclei. Therefore, the present work aims to perform a global analysis of the isospin-dependent nucleon-nucleus MOP based on the DBHF calculation in symmetric and asymmetric nuclear matter. The DBHF is used to evaluate the relativistic structure of the nucleon self-energies in nuclear matter at various densities and asymmetries. The Schrödinger equivalent potentials of finite nuclei are derived from these Dirac components by a local density approximation (LDA). The nucleon-nucleus scattering calculations are carried out for a broad spectrum $n$ and $p$ scattering experiments below 200 MeV with targets ranging from ${}^{12}$C to ${}^{208}$Pb.

References in corpus (4)

• Dirac-Brueckner-Hartree-Fock calculations for isospin asymmetric nuclear matter based on improved approximation schemes
• Microscopic positive-energy potential based on Gogny interaction
• Properties of single-particle states in a fully self-consistent particle-vibration coupling approach
• Relativistic Effects in 3-Nucleon Forces for Nuclear Matter and Finite Nuclei

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• The Spin Orbit term in the Nuclear Shell Model
• Relativistic Mean-Field Approach in Nuclear Systems
• Employing $p{+}^{58}$Ni elastic scattering for determination of $K$-shell ionization cross section of ${}^{58}$Ni${}^{19+}$ in collisions with hydrogen gas target at 95 MeV/u
• Proton radioactivity in deformed nuclei with microscopic optical potential: A novel angular-dependent emission mechanism in the nanosecond-lived ${}^{149}$Lu