Identification of yrast high-K intrinsic states in Os188

V. Modamio, A. Jungclaus, Zs Podolyak, Y. Shi, F. R. Xu, A. Algora, D. Bazzacco, D. Escrig, L. M. Fraile, S. Lenzi, N. Marginean, T. Martinez, D. R. Napoli, R. Schwengner, C. A. Ur

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Abstract

The high-spin structure of the Z=76 nucleus Os188 has been studied using the incomplete fusion reaction Li7+W186. A Kπ=10+ band has been established up to spin (24+) and its crossing with the ground-state band has been studied. In addition, intrinsic high-K states have been identified and on top of two of them, Kπ=7- and Kπ=10-, regular bands have been observed. The Kπ=16+ and Kπ=18+ states are yrast whereas the Kπ=14+ level lies only 33 keV above the yrast line and decays with a low reduced hindrance of fν<1.3 to the ground-state band (ΔK=14). The results are discussed by means of a systematic comparison with the even-even neighboring nucleus Os186. Configuration-constrained multiquasiparticle potential-energy-surface calculations have been performed to identify the configurations of multiquasiparticle states.

Original languageEnglish
Article number024310
JournalPhysical Review C - Nuclear Physics
Volume79
Issue number2
DOIs
Publication statusPublished - Feb 2 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Modamio, V., Jungclaus, A., Podolyak, Z., Shi, Y., Xu, F. R., Algora, A., Bazzacco, D., Escrig, D., Fraile, L. M., Lenzi, S., Marginean, N., Martinez, T., Napoli, D. R., Schwengner, R., & Ur, C. A. (2009). Identification of yrast high-K intrinsic states in Os188. Physical Review C - Nuclear Physics, 79(2), [024310]. https://doi.org/10.1103/PhysRevC.79.024310