Study of excited states and observation of collective level structures in the odd–odd nucleus 194 Bi

A. Herzáň*, S. Juutinen, K. Auranen, T. Grahn, P. T. Greenlees, K. Hauschild, U. Jakobsson, R. Julin, S. Ketelhut, M. Leino, A. Lopez-Martens, T. Lönnroth, P. Nieminen, M. Nyman, J. Partanen, P. Peura, P. Rahkila, P. Ruotsalainen, M. Sandzelius, J. SarénC. Scholey, J. M.K. Slotte, J. Sorri, S. Stolze, J. Uusitalo

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

High-spin states of the odd–odd 194Bi nucleus have been studied by means of nuclear spectroscopy for the first time. Two low-lying rotational bands were observed. The positive-parity band built on a short-lived isomeric state 633 keV above the α and β decaying long-lived (10-) state is assigned a πi13/2⊗νi13/2-1 configuration, while the other band is attributed to the πh9/2⊗νi13/2-1 configuration. Both of these bands are assumed to have oblate shape. Three band-like structures composed predominantly of Δ I= 1 transitions were also found. One of the shears band candidates is firmly linked to the lower lying level structures whereas for the other two links to lower-lying structures remain missing.

Original languageEnglish
Article number165
JournalEuropean Physical Journal A
Volume56
Issue number6
DOIs
Publication statusPublished - 10 Jun 2020
MoE publication typeA1 Journal article-refereed

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