Elsevier

Nuclear Physics A

Volume 520, December 1990, Pages c325-c332
Nuclear Physics A

K-selection or barrier penetration?

https://doi.org/10.1016/0375-9474(90)91157-MGet rights and content

Abstract

Questions on the validity of the K-selection rule for the decay of high spin isomers in deformed nuclei has been raised and an alternative mode by barrier penetration has been proposed. The present paper reports on a sensitive study of a K = 14 isomer in 174Hf where 20 different branches decay from the same level and consistently show low hindrance factors. It is found that the hindrance factors depend on K but have smaller absolute values than expected. The question of a barrier penetration decay mode is still open.

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