Interacting-boson-fermion-approximation description of negative-parity states in even-odd Yb isotopes

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.1920· OSTI ID:5128916

Hsieh, S T ^[1]; Chuu, D S ^[2]

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1. Department of Physics, National Tsing Hua University, Hsinchu, Taiwan (Republic of China)
2. Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan (Republic of China)

The negative-parity energy levels of the even-odd Yb isotopes, {sup 163}Yb, {sup 165}Yb, {sup 169}Yb, {sup 171}Yb, and {sup 173}Yb, are studied systematically within the framework of the extended interacting-boson-fermion-approximation (IBFA) model in which one odd fermion is couplied with a boson core. The boson core is described with the IBA model but allowing one boson to break into a quasifermion pair. The odd fermion is assumed to be in one of the {ital f}{sub 7/2} and {ital p}{sub 3/2} single-particle orbitals while the fermion pair is allowed to occupy the single-particle orbit {ital i}{sub 13/2}. It was found that the negative-parity energy levels of these even-odd Yb isotopes and the values of transition quadrupole moments for the ground-state rotational band of {sup 173}Yb can be reproduced in fairly good agreement with the observed data.

• OSTI ID: 5128916
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
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ISOMERIC TRANSITION ISOTOPES
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YTTERBIUM 163
YTTERBIUM 165
YTTERBIUM 169
YTTERBIUM 171
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