Novel decay modes of high-K isomers: Tunneling in a triaxial landscape

B. Crowell, P. Chowdhury, S. J. Freeman, C. J. Lister, M. P. Carpenter, R. G. Henry, R. V.F. Janssens, T. L. Khoo, T. Lauritsen, Y. Liang, F. Soramel, I. G. Bearden

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

The nucleus W176 has been studied using the reaction Nd150(30Si,4n), with prompt and delayed γ-γ coincidence techniques. A K=14 isomer (t1/270 ns) is found to exhibit a unique decay pattern, primarily decaying to K=0 states, in contrast to all previously studied high-K isomers. Calculations have been perfomed of both Coriolis mixing and tunneling through a potential barrier in the triaxial degree of freedom to understand these unusual decays. While Coriolis mixing models do not reproduce the variations in the decay patterns in neighboring nuclei, the tunneling calculations are remarkably successful.

Original languageEnglish (US)
Pages (from-to)1164-1167
Number of pages4
JournalPhysical Review Letters
Volume72
Issue number8
DOIs
StatePublished - Jan 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Crowell, B., Chowdhury, P., Freeman, S. J., Lister, C. J., Carpenter, M. P., Henry, R. G., Janssens, R. V. F., Khoo, T. L., Lauritsen, T., Liang, Y., Soramel, F., & Bearden, I. G. (1994). Novel decay modes of high-K isomers: Tunneling in a triaxial landscape. Physical Review Letters, 72(8), 1164-1167. https://doi.org/10.1103/PhysRevLett.72.1164