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Nuclear Theory·nucl-th

Monday·August 12, 2019

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    [Submitted on 9 Aug 2019]

    Microscopic calculation of inelastic proton scattering off O, Be, Be, and C for study of neutron excitation in neutron-rich nuclei

    Yoshiko Kanada-En'yo · Kazuyuki Ogata

    The microscopic coupled-channel calculation of inelastic proton scattering is performed for the study of neutron excitations in states of O, Be, Be, and C. Proton-nucleus potentials in the coupled-channel calculation are microscopically derived by folding the Melbourne -matrix interaction with matter and transition densities of target nuclei obtained by the structure model calculation of antisymmetrized molecular dynamics. The calculated result reasonably reproduces the elastic and inelastic proton scattering cross sections, and supports the dominant contribution of neutron in the excitation of Be and C as well as O. Sensitivity of the inelastic scattering cross sections to the neutron transition density is discussed. The exotic feature of the neutron transition density with the amplitude in the outer region in Be and C is focused.

    Comments:
    15 pages, 13 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1908.03293 [pdf]
    PRC(2019)·16 citations
  2. 02

    [Submitted on 9 Aug 2019]

    Structure of odd-odd Cs isotopes within the interacting boson-fermion-fermion model based on the Gogny-D1M energy density functional

    K. Nomura · R. Rodríguez-Guzmán · L. M. Robledo

    The spectroscopic properties of the odd-odd isotopes Cs have been studied within the interacting boson-fermion-fermion model based on the Gogny-D1M energy density functional framework. Major ingredients to build the interacting boson-fermion-fermion Hamiltonian, such as the ()-deformation energy surfaces for the even-even core nuclei Xe as well as single-particle energies and occupation probabilities of the odd nucleons, have been computed microscopically with the constrained Hartree-Fock-Bogoliubov method. A few coupling constants of the boson-fermion and residual neutron-proton interactions are fitted to reproduce with a reasonable accuracy the experimental excitation energy of the low-lying levels of the odd-mass and odd-odd nuclei. The method is applied to describe the low-energy low-spin spectra of the odd-odd Cs nuclei and the band structures of higher-spin higher-energy states, mainly based on the configuration. Many of those odd-odd Cs nuclei have been identified as candidates for exhibiting chiral doublet bands.

    Comments:
    18 pages, 18 figures, 4 tables; to appear in Phys. Rev. C
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    1908.03322 [pdf]
    PRC(2020)·18 citations
  3. 03

    [Submitted on 9 Aug 2019]

    Coriolis terms in Skyrmion Quantization

    J. I. Rawlinson🇬🇧

    We consider the problem of quantizing a Skyrmion which is allowed to vibrate, rotate and isorotate. Previous approaches have neglected the interactions between vibrations and zero modes (analogous to so-called Coriolis terms in the molecular physics literature). A new formalism incorporating these interactions is introduced, inspired by a principal bundle approach to deformable-body dynamics. We quantize the B=4 and B=7 Skyrmions and compare the results to observed nuclear properties of Helium-4 and the Lithium-7/Beryllium-7 isospin doublet.

    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Theory (hep-th)
    arXiv:
    1908.03414 [pdf]
    NPB(2019)·14 citations
  4. 04

    [Submitted on 8 Aug 2019]

    Shell-model-like approach based on cranking covariant density functional theory with a separable pairing force

    BinWu Xiong

    The shell-model-like approach (SLAP) based on cranking covariant density functional theory (CDFT) with a separable pairing force is developed. The developed cranking CDFT-SLAP with separable pairing force is applied to investigate the rotational spectra in Fe, including the positive-parity yrast band and two negative-parity signature partner bands, in comparison with the cranking CDFT-SLAP with monopole pairing force calculations. Excellent agreement with the available data is achieved.

    Comments:
    20 pages, 5 figures. arXiv admin note: text overlap with arXiv:1801.05503 by other authors
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1908.03561 [pdf]
    PRC(2020)·7 citations

Affiliations

first authorsco-authorsvia INSPIRE