High-K isomers in 176W and mechanisms of K violation

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

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Abstract

An isomer, with t1/2=35±10 ns and J,Kπ=14,14+, has been observed in the nucleus 176W using the reaction 150Nd(30Si,4n) at a beam energy of 133 MeV. The isomer exhibits an unusual pattern of decay in which the majority of the flux proceeds directly to states with 〈K〉=0, bypassing available levels of intermediate K. This severe breakdown of normal K-selection rules in 176W is compared with recent observations of K violation in neighboring nuclei, within the framework of proposed theoretical approaches. The available data on these K-violating decays seem to have a consistent explanation in models of K mixing which include large-amplitude fluctuations of the nuclear shape.

Original languageEnglish
Pages (from-to)1173-1190
Number of pages18
JournalPhysical Review C
Volume53
Issue number3
DOIs
StatePublished - Mar 1996

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Crowell, B., Chowdhury, P., Blumenthal, D. J., Freeman, S. J., Lister, C. J., Carpenter, M. P., ... Bearden, I. G. (1996). High-K isomers in 176W and mechanisms of K violation. Physical Review C, 53(3), 1173-1190. https://doi.org/10.1103/PhysRevC.53.1173

High-K isomers in 176W and mechanisms of K violation. / Crowell, B.; Chowdhury, P.; Blumenthal, D. J.; Freeman, S. J.; Lister, C. J.; Carpenter, M. P.; Henry, R. G.; Janssens, R. V F; Khoo, T. L.; Lauritsen, T.; Liang, Yun; Soramel, F.; Bearden, I. G.

In: Physical Review C, Vol. 53, No. 3, 03.1996, p. 1173-1190.

Research output: Contribution to journalArticle

Crowell, B, Chowdhury, P, Blumenthal, DJ, Freeman, SJ, Lister, CJ, Carpenter, MP, Henry, RG, Janssens, RVF, Khoo, TL, Lauritsen, T, Liang, Y, Soramel, F & Bearden, IG 1996, 'High-K isomers in 176W and mechanisms of K violation', Physical Review C, vol. 53, no. 3, pp. 1173-1190. https://doi.org/10.1103/PhysRevC.53.1173
Crowell B, Chowdhury P, Blumenthal DJ, Freeman SJ, Lister CJ, Carpenter MP et al. High-K isomers in 176W and mechanisms of K violation. Physical Review C. 1996 Mar;53(3):1173-1190. https://doi.org/10.1103/PhysRevC.53.1173
Crowell, B. ; Chowdhury, P. ; Blumenthal, D. J. ; Freeman, S. J. ; Lister, C. J. ; Carpenter, M. P. ; Henry, R. G. ; Janssens, R. V F ; Khoo, T. L. ; Lauritsen, T. ; Liang, Yun ; Soramel, F. ; Bearden, I. G. / High-K isomers in 176W and mechanisms of K violation. In: Physical Review C. 1996 ; Vol. 53, No. 3. pp. 1173-1190.
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