Neutron halo in deformed nuclei from a relativistic Hartree-Bogoliubov model in a Woods-Saxon basis

TL;DR

This paper investigates neutron halos in deformed nuclei using a self-consistent relativistic Hartree-Bogoliubov model, revealing that halo orbitals are decoupled from core deformation in neutron-rich nuclei like $^{44}$Mg.

Contribution

It introduces a fully self-consistent deformed relativistic Hartree-Bogoliubov model in a Woods-Saxon basis for studying halos in deformed nuclei, highlighting the decoupling of halo orbitals from core deformation.

Findings

Halo orbitals are decoupled from core deformation.

The model accurately describes large spatial extensions in neutron-rich nuclei.

Deformation effects have minimal impact on halo formation.

Abstract

Halo phenomenon in deformed nuclei is studied by using a fully self-consistent deformed relativistic Hartree-Bogoliubov model in a spherical Woods-Saxon basis with the proper asymptotic behavior at large distance from the nuclear center. Taking a deformed neutron-rich and weakly bound nucleus $^{44}$Mg as an example and by examining contributions of the halo, deformation effects, and large spatial extensions, we show a decoupling of the halo orbitals from the deformation of the core.