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Persistence of K Isomerism in the N = 104 Isotones: Observations of a High-seniority Isomer 179 75 Re

Thwaites, C.; Wheldon, C; Bruce, A M; Walker, Philip M; Dracoulis, George; Byrne, Aidan; Kibedi, Tibor; Kondev, F.; Pearson, C J; Purry, C


The nuclear decay of 75179Re has been studied following the 165Ho(18O,4n)179Re and 173Yb(11B,5n)179Re reactions. Previously unobserved multiquasiparticle states have been identified in 75179Re, with highly K-forbidden decays. One of these, with a half-life of 466±15 μs, is the longest-lived high-seniority (>6) isomer yet discovered. This metastable state offers an opportunity to explore K isomerism as protons are added away from the midshell region. In addition, the excitation energies of...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Physical Review C: Nuclear Physics


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