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Anomalous isomeric decays in 174Lu as a probe of K-mixing and interactions in deformed nuclei

Dracoulis, George; Kondev, Filip G; Lane, Gregory; Byrne, Aidan; McGoram, T; Kibedi, Tibor; Ahmad, I; Carpenter, M P; Janssens, R V F; Lauritsen, T; Lister, C J; Seweryniak, D; Chowdhury, P; Tandel, S K


A Kπ=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus 174Lu has been identified and characterized. The isomer decays to both Kπ=7+ and Kπ=0+ rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ band but those to the 0+ band are caused by a chance degeneracy between the isomer and a collective state, allowing...[Show more]

CollectionsANU Research Publications
Date published: 2006-09-18
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.97.122501


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