skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Toroidal Nuclear Matter Distributions of Superheavy Nuclei from Constrained Skyrme-HFB Calculations

Abstract

Using the Hartree Fock Bogoliubov (HFB) self-consistent mean-field theory with the SkM* Skyrme energy-density functional, we study nuclear structure properties of even even superheavy nuclei (SHN) of Z = 120 isotopes and N = 184 isotones. The shape of the nucleus along the lowest energy curve as a function of the quadrupole moment Q20 makes a sud- den transition from the oblate spheroids (biconcave discs) to the toroidal shapes, in the region of large oblate quadrupole moments.

Authors:
 [1];  [1];  [2]
  1. Maria Curie-Sklodowska University, Poland
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1347329
DOE Contract Number:
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Journal Volume: 10; Journal Issue: 1; Conference: The XXIII Nuclear Physics Workshop "Marie and Pierre Curie", Kazimierz Dolny, Poland, 20160927, 20161002
Country of Publication:
United States
Language:
English
Subject:
superheavy nuclei; toroidal nuclei; self-consistent mean-field theory; Hatree-Fock-Bogoiiubov Calculations

Citation Formats

Kosior, Amelia, Staszczak, A., and Wong, Cheuk-Yin. Toroidal Nuclear Matter Distributions of Superheavy Nuclei from Constrained Skyrme-HFB Calculations. United States: N. p., 2017. Web. doi:10.5506/APhysPolBSupp.10.249.
Kosior, Amelia, Staszczak, A., & Wong, Cheuk-Yin. Toroidal Nuclear Matter Distributions of Superheavy Nuclei from Constrained Skyrme-HFB Calculations. United States. doi:10.5506/APhysPolBSupp.10.249.
Kosior, Amelia, Staszczak, A., and Wong, Cheuk-Yin. Sun . "Toroidal Nuclear Matter Distributions of Superheavy Nuclei from Constrained Skyrme-HFB Calculations". United States. doi:10.5506/APhysPolBSupp.10.249.
@article{osti_1347329,
title = {Toroidal Nuclear Matter Distributions of Superheavy Nuclei from Constrained Skyrme-HFB Calculations},
author = {Kosior, Amelia and Staszczak, A. and Wong, Cheuk-Yin},
abstractNote = {Using the Hartree Fock Bogoliubov (HFB) self-consistent mean-field theory with the SkM* Skyrme energy-density functional, we study nuclear structure properties of even even superheavy nuclei (SHN) of Z = 120 isotopes and N = 184 isotones. The shape of the nucleus along the lowest energy curve as a function of the quadrupole moment Q20 makes a sud- den transition from the oblate spheroids (biconcave discs) to the toroidal shapes, in the region of large oblate quadrupole moments.},
doi = {10.5506/APhysPolBSupp.10.249},
journal = {},
number = 1,
volume = 10,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2017},
month = {Sun Jan 01 00:00:00 EST 2017}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Within the self-consistent constraint Skyrme-Hartree-Fock+BCS model (SHF+BCS), we found equilibrium toroidal nuclear density distributions in the region of superheavy elements. For nuclei with a sufficient oblate deformation (Q_{20} < -200 b), it becomes energetically favorable to change the genus of nuclear surface from 0 to 1, i.e., to switch the shape from a biconcave disc to a torus. The energy of the toroidal (genus=1) SHF+BCS solution relative to the compact (genus=0) ground state energy is strongly dependent both on the atomic number Z and the mass number A. We discuss the region of Z and A where the toroidal SHF+BCSmore » total energy begins to be a global minimum.« less
  • In this paper the charge density distributions, the charge root-mean-square radii and the single-particle energies for /sup 16/O, /sup 28/Si, /sup 32/S, /sup 40/Ca, /sup 48/Ca, /sup 60/Ni, /sup 90/Zr, and /sup 120/Sn are calculated with Skyrme force parameters SII, SIII, GS/sub 2/, Ska and compared with experiments. Reasonable results can be obtained by the above Skyrme parameters for the charge density distributions, the charge root-mean-square radii and the single-particle energies
  • A new direction for the calculation of nuclear properties with current knowledge of finite nuclei is briefly discussed. Main emphasis is on developing a framework in which the meson field can be made self-consistent. Three types of worthwhile experiments are suggested. 1 figure. (SDF)
  • The Skyrme-Hartree-Fock-Bogoliubov code HFBTHO using the axial (2D) Transformed Harmonic Oscillator basis is tested against the HFODD (3D Cartesian HO basis) and HFBRAD (radial coordinate) codes. Results of large-scale ground-state calculations are presented for the SLy4 and SkP interactions.