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Shell-model determination of the interacting boson model parameters for two nondegenerate j shells

Journal Article · · Phys. Rev. C; (United States)
;
The interacting boson model is examined from a microscopic viewpoint using the generalized seniority scheme. The present discussion focuses on regions of the periodic table in which the many nondegenerate nucleon orbits can be approximated in terms of two nondegenerate orbits, the sum of whose occupancies is chosen to be the same as the total occupancy of the major shell being studied. Predictions for the interacting boson model parameters are obtained by constructing the zeroth-order boson images of the corresponding fermion operators. Calculations are carried out for the tungsten isotopes, and the predicted interacting boson model parameters are found to be in good overall agreement with the empirically determined values for the tungsten isotopes. The calculations reproduce the observed SU(3) or rotational character of the low-lying energy states in the N = 96 to 114 mass region.
Research Organization:
Department of Physics and the Theoretical Physics Division, University of Arizona, Tuscon, Arizona 85721
OSTI ID:
6246696
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 24:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651813 -- Nuclear Properties & Reactions
A=150-189
Theoretical-- Energy Levels & Transitions-- (-1987)
653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
EIGENSTATES
ENERGY LEVELS
HAMILTONIANS
INTERACTING BOSON MODEL
ISOTOPES
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
NUCLEAR MODELS
PARITY
PARTICLE PROPERTIES
QUANTUM OPERATORS
SHELL MODELS
SPIN
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
TUNGSTEN ISOTOPES