Hindered decays from a non-yrast four-quasiparticle isomer in 164Er

T. P.D. Swan, P. M. Walker, Zs Podolyák, M. W. Reed, G. D. Dracoulis, G. J. Lane, T. Kibédi, M. L. Smith

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The half-life of a Kπ=12+ isomer in 164Er has been measured to be 68(2) ns, and new decay pathways have been identified. These include highly K-forbidden γ-ray transitions directly to the ground-state rotational band, with reduced hindrance values that can be compared with those found for heavier nuclides. The new data support the interpretation that the level density is a key variable in determining K-forbidden transition rates.

Original languageEnglish
Article number044307
JournalPhysical Review C
Issue number4
Publication statusPublished - 4 Oct 2012
Externally publishedYes

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