γ-tunneling calculations for the decays of the K isomers in the Hf, W, Os region

Kanako Narimatsu, Yoshifumi Shimizu, Toshiyuki Shizuma

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Abstract

Recent studies of the high-K isomers in the Hf, W, Os region have uncovered the existence of direct branches to the low-K rotational bands with unexpectedly large transition probabilities. The measured hindrance factors have called the validity of the K quantum number into question. In order to give a new insight to this problem, we have performed systematic calculations of the M1 and E2 partial life times of the K isomers by using a simple tunneling model in which the γ degree of freedom is taken into account. Many of the observed partial life times are reproduced by the model, but some data remain completely off the calculations. This requires further studies of the spin-orientation degree of freedom.

Original languageEnglish
Pages (from-to)69-88
Number of pages20
JournalNuclear Physics A
Volume601
Issue number1
DOIs
Publication statusPublished - Apr 29 1996

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isomers
degrees of freedom
life (durability)
decay
transition probabilities
quantum numbers

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

γ-tunneling calculations for the decays of the K isomers in the Hf, W, Os region. / Narimatsu, Kanako; Shimizu, Yoshifumi; Shizuma, Toshiyuki.

In: Nuclear Physics A, Vol. 601, No. 1, 29.04.1996, p. 69-88.

Research output: Contribution to journalArticle

Narimatsu, Kanako ; Shimizu, Yoshifumi ; Shizuma, Toshiyuki. / γ-tunneling calculations for the decays of the K isomers in the Hf, W, Os region. In: Nuclear Physics A. 1996 ; Vol. 601, No. 1. pp. 69-88.
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