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Title: Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes
Authors: Nomura, K ×
Otsuka, Taka
Rodriguez-Guzman, R
Robledo, L. M
Sarriguren, P
Regan, P. H
Stevenson, P. D
Podolyak, Zs #
Issue Date: 2011
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review C, Nuclear Physics vol:83 issue:5
Article number: 054303
Abstract: Structural evolution in neutron-rich Os and W isotopes is investigated in terms of the interacting boson model
(IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov calculations with the Gogny-D1S
energy density functional (EDF). The interaction strengths of the IBM Hamiltonian are produced by mapping the
potential energy surface (PES) of the Gogny-EDF with quadrupole degrees of freedom onto the corresponding
PES of the IBM system. We examine the prolate-to-oblate shape/phase transition which is predicted to take place
in this region as a function of neutron number
N
within the considered Os and W isotopic chains. The onset of
this transition is found to be more rapid compared to the neighboring Pt isotopes. The calculations also allow
the prediction of spectroscopic variables (excited state energies and reduced transition probabilities) which are
presented for the neutron-rich
192
,
194
,
196
W nuclei, for which there is only very limited experimental data available
to date.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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