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Residual interactions and the K-mixing-induced fast decay of the three-quasiparticle isomer in 171 Tm

Chen, Fang-Qi; Liu, Yan-Xin; Sun, Yang; Walker, Philip M; Dracoulis, George


The anomalously fast decay of a 19/2 + three-quasiparticle isomer in 171Tm was interpreted recently as an example of K mixing induced by a very small mixing matrix element but a (random) close proximity to a collective state. To understand the source of the residual interaction we have generalized the projected shell model by introducing two-body octupole and hexadecupole forces into the Hamiltonian and expanding the model space with inclusion of specific three-quasiparticle configurations. It...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Physical Review C: Nuclear Physics
DOI: 10.1103/PhysRevC.85.024324


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