Giant neutron halos in the non-relativistic mean field approach

Abstract

Giant neutron halos in medium-heavy nuclei are studied in the framework of the Hartree-Fock-Bogoliubov (HFB) approach with Skyrme interactions. The appearance of such structures depends sensitively on the effective interaction adopted. This is illustrated by comparing the predictions of SLy4 and SkI4 in the Ca and Zr isotopic chains. The former force gives no halo effect, the latter predicts a neutron halo in the Zr chain with A>122 due to the weakly bound orbitals 3p1/2 and 3p3/2. The structure of the halo is analyzed in terms of the occupation probabilities of these orbitals and their partial contributions to the neutron density. The anti-halo effect in Ni and Zr isotopes is also discussed by comparing the occupation probabilities of Hartree-Fock neutron single-particle states near the Fermi energy with the corresponding HFB quasiparticle states.

arXiv comment10 figures

References in corpus (12)

• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Mean-field description of ground-state properties of drip-line nuclei: Pairing and continuum effects
• A Giant Halo at the Neutron Drip Line
• Pairing and continuum effects in nuclei close to the drip line
• Nuclear Skins and Halos in the Mean-Field Theory
• A Dirac-Hartree-Bogoliubov approximation for finite nuclei
• Pairing Interaction and Self-Consistent Densities in Neutron-Rich Nuclei
• Pairing anti-halo effect
• Pairing Properties In Relativistic Mean Field Models Obtained From Effective Field Theory
• Pairing correlations and resonant states in the relativistic mean field theory
• Study of Proton Magic Even-Even Isotopes and Giant Halos of Ca Isotopes with Relativistic Continuum Hartree-Bogoliubov Theory
• Pairing-induced localization of the particle continuum in weakly bound nuclei

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