Two-neutron halo structure and anti-halo effect in 31F

Abstract

We perform a detailed analysis for the structure of 31F, which is a candidate of the halo nucleus. We calculate the radius and reaction cross-section using a three-body model of 29F+n+n and discuss how the competition between the neutron-pairing and the single-particle energy induces structural changes of 31F. The present analysis further clarifies a new aspect of the anti-halo efect that suppresses the halo structure.

arXiv comment6 pages, 3 figures

References in corpus (9)

• Recent development of complex scaling method for many-body resonances and continua in light nuclei
• Reaction cross sections of carbon isotopes incident on a proton
• Pairing anti-halo effect
• Probing the weakly-bound neutron orbit of ${}^{31}$Ne with total reaction and one-neutron removal cross sections
• Glauber-model analysis of total reaction cross sections for Ne, Mg, Si, and S isotopes with Skyrme-Hartree-Fock densities
• Unveiling pairing anti-halo effect in odd-even staggering in reaction cross sections of weakly bound nuclei
• Two-neutron halo structure of ${}^{31}$F and a novel pairing anti-halo effect
• Precise comparison of the Gaussian expansion method and the Gamow shell model
• Scaling properties of proton-nucleus total reaction cross sections