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Nuclear Theory·nucl-th

Monday·March 9, 2020

10 papers—3 primary·7 cross-listed

All10Primary3Cross-lists7
  1. 01

    On the robustness of sub-shell closures: A high angular momentum analysis of the titanium isotopes

    Tomas R. Rodriguez · J. Luis Egido

    The potential sub-shell closures N = 32 and N = 34 are analyzed at high spins in the titanium isotopes within the generalized beyond mean field theory considering triaxial deformations and the angular frequency as generator coordinates together with the particle number and the angular momentum conservation. A good description of bulk properties, high angular momenta spectra and transition probabilities is obtained. The outcome at high spin in these nuclei is consistent with the magic number character of N = 32 but not of N = 34.

    nucl-thPLB(2020)·4 citations
  2. 02

    Effects of finite nucleon size, vacuum polarization, and electromagnetic spin-orbit interaction on nuclear binding energies and radii in spherical nuclei

    Tomoya Naito · Xavier Roca-Maza · Gianluca Colò · Haozhao Liang

    The electromagnetic effects of the finite size of the nucleon are implemented self-consistently on top of the Skyrme Hartree-Fock calculation, where the electric form factors of both protons and neutrons are considered. Furthermore, the vacuum polarization and the electromagnetic spin-orbit interaction are taken into account. The self-consistent finite-size effects give a different Coulomb potential from the conventional one and affect the neutrons as well. The contribution of the finite-size effects to the total energy reaches in . The vacuum polarization and the electromagnetic spin-orbit interaction are also non-negligible, especially in the heavy nuclei. These effects provide a comparable contribution of the total energy to that of the isospin symmetry-breaking terms of the nuclear interaction. The mirror nuclei mass difference in -- is also studied, and its value is improved by approximately one order of magnitude.

    nucl-thnucl-exPRC(2020)·13 citations
  3. 03

    Structure and composition of inner crust of neutron stars from Gogny interactions

    C. Mondal · X. Viñas · M. Centelles · J.N. De

    The detailed knowledge of the inner crust properties of neutron stars might be important to explain different phenomena such as pulsar glitches or the possibility of an {\it r-process} site in neutron star mergers. It has been shown in the literature that quantal effects like shell correction or pairing may play a relevant role to determine the composition of the inner crust of the neutron star. In this paper we construct the equation of state of the inner crust using the finite-range Gogny interactions, where the mean field and the pairing field are calculated with same interaction. We have used the semiclassical Variational Wigner-Kirkwood method along with shell and pairing corrections calculated with the Strutinsky integral method and the BCS approximation, respectively. Our results are compared with those of some popular models from the literature. We report a unified equation of state of the inner crust and core computed with the D1M* Gogny force, which was specifically fabricated for astrophysical calculations.

    nucl-thastro-ph.HEastro-ph.SRPRC(2020)·37 citations

Affiliations

first authorsco-authorsvia INSPIRE