Beyond Mean Field Description of the Gamow-Teller {beta}{sup +} Decay of Proton-Rich Kr Isotopes

Journal Article · Thu Jan 24 04:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2870478· OSTI ID:21052909

Petrovici, A ^[1]

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1. National Institute for Physics and Nuclear Engineering, R-077125 Bucharest (Romania) Institut fuer Theoretische Physik, Universitaet Tuebingen, D-72076 Tuebingen (Germany)

We studied the influence of shape mixing on the Gamow-Teller {beta}{sup +} decay of the nucleus {sup 74}Kr using the complex Excited Vampir variational approach for the description of the ground state of the parent nucleus and the 1{sup +} states in the beta window in the daughter nucleus {sup 74}Br. Within the same approach the Gamow-Teller strength distributions for the decay of the ground state and the lowest-excited states in the nucleus {sup 72}Kr to the 1{sup +} states in the nucleus {sup 72}Br are obtained using a rather large model space and realistic effective interaction. The shape coexistence and mixing are consistently described for both the 0{sup +} and 2{sup +} states in the even-even parent nucleus and the 1{sup +} states in the odd-odd daughter nucleus. The theoretical results for the Gamow-Teller strength distributions and the accumulated strengths are compared with the available data and predictions concerning the decay of the first excited 0{sup +} and the yrast 2{sup +} in the rp-process waiting point nucleus {sup 72}Kr are presented.

• OSTI ID: 21052909
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 972; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BROMINE 72
BROMINE 74
DISTRIBUTION
EXCITED STATES
GAMOW-TELLER RULES
GROUND STATES
HARTREE-FOCK METHOD
KRYPTON 72
KRYPTON 74
MEAN-FIELD THEORY
NUCLEAR STRUCTURE
PROTONS
VARIATIONAL METHODS