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Title: Nuclear shape transitions in neutron-rich medium-mass nuclei

Abstract

We study the isotopic evolution of the ground-state nuclear shapes in neutron-rich Kr, Rb, Sr, Y, Zr, Nb, and Mo isotopic chains. Both even-even and odd-A nuclei are included in the analysis. For the latter we also study the systematics of their one-quasiparticle low-lying configurations. The theoretical approach is based on a selfconsistent Hartree-Fock-Bogoliubov formalism with finite range Gogny energy density functionals. Neutron separation energies, charge radii, and the spin-parity of the ground states are calculated and compared with available data. Shape-transition signatures are identified around N= 60 isotones as discontinuities in both charge radii isotopic shifts and spin-parities of the ground states. The nuclear deformation including triaxiality is shown to play a relevant role in the understanding of the bulk and spectroscopic features of the ground and low-lying one-quasiparticle states.

Authors:
; ;  [1];  [2];  [3]
  1. Instituto de Estructura de la Materia, IEM-CSIC, Serrano 123, E-28006 Madrid (Spain)
  2. (United States)
  3. (Spain)
Publication Date:
OSTI Identifier:
22075587
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1491; Journal Issue: 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DEFORMED NUCLEI; ENERGY DENSITY; GROUND STATES; HARTREE-FOCK METHOD; HARTREE-FOCK-BOGOLYUBOV THEORY; INTERMEDIATE MASS NUCLEI; ISOTONIC NUCLEI; KRYPTON ISOTOPES; MOLYBDENUM ISOTOPES; NEUTRON SEPARATION ENERGY; NIOBIUM ISOTOPES; NUCLEAR DEFORMATION; NUCLEAR RADII; NUCLEAR STRUCTURE; PARITY; SPECTRAL SHIFT; SPIN; STRONTIUM ISOTOPES

Citation Formats

Sarriguren, P., Rodriguez-Guzman, R., Robledo, L. M., Department of Chemistry, Rice University, Houston, Texas 77005, and Departamento de Fisica Teorica, Universidad Autonoma de Madrid, 28049-Madrid. Nuclear shape transitions in neutron-rich medium-mass nuclei. United States: N. p., 2012. Web. doi:10.1063/1.4764213.
Sarriguren, P., Rodriguez-Guzman, R., Robledo, L. M., Department of Chemistry, Rice University, Houston, Texas 77005, & Departamento de Fisica Teorica, Universidad Autonoma de Madrid, 28049-Madrid. Nuclear shape transitions in neutron-rich medium-mass nuclei. United States. doi:10.1063/1.4764213.
Sarriguren, P., Rodriguez-Guzman, R., Robledo, L. M., Department of Chemistry, Rice University, Houston, Texas 77005, and Departamento de Fisica Teorica, Universidad Autonoma de Madrid, 28049-Madrid. Sat . "Nuclear shape transitions in neutron-rich medium-mass nuclei". United States. doi:10.1063/1.4764213.
@article{osti_22075587,
title = {Nuclear shape transitions in neutron-rich medium-mass nuclei},
author = {Sarriguren, P. and Rodriguez-Guzman, R. and Robledo, L. M. and Department of Chemistry, Rice University, Houston, Texas 77005 and Departamento de Fisica Teorica, Universidad Autonoma de Madrid, 28049-Madrid},
abstractNote = {We study the isotopic evolution of the ground-state nuclear shapes in neutron-rich Kr, Rb, Sr, Y, Zr, Nb, and Mo isotopic chains. Both even-even and odd-A nuclei are included in the analysis. For the latter we also study the systematics of their one-quasiparticle low-lying configurations. The theoretical approach is based on a selfconsistent Hartree-Fock-Bogoliubov formalism with finite range Gogny energy density functionals. Neutron separation energies, charge radii, and the spin-parity of the ground states are calculated and compared with available data. Shape-transition signatures are identified around N= 60 isotones as discontinuities in both charge radii isotopic shifts and spin-parities of the ground states. The nuclear deformation including triaxiality is shown to play a relevant role in the understanding of the bulk and spectroscopic features of the ground and low-lying one-quasiparticle states.},
doi = {10.1063/1.4764213},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1491,
place = {United States},
year = {2012},
month = {10}
}