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  • Stolze, S., et al. (author)
  • Single-particle and collective excitations in the transitional nucleus Os-166
  • 2021
  • In: Journal of Physics G. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 48:12
  • Journal article (peer-reviewed)abstract
    • The mean lifetimes of the lowest energy 2(+), 8(+) and 9(-) states in Os-166 have been measured using the recoil distance Doppler-shift method in conjunction with a selective recoil-decay tagging technique. These measurements extend studies into the most neutron-deficient mass region accessible to current experimental methods. The B(E2; 2(+) -> 0(+)) = 7(2) W.u. extracted from these measurements is markedly lower than those observed in the heavier even-mass Os isotopes. The 8(+) and 9(-) states yield reduced transition probabilities that are consistent with single-particle transitions. While these values may indicate a departure from collective structure, the level scheme and the underlying nuclear configurations can also be interpreted in terms of a simple collective picture. This contrasting behaviour suggests an intriguing dichotomy in the description of heavy transitional nuclei.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Grahn, T. (1)
Stolze, S. (1)
Uusitalo, J. (1)
Andgren, Karin (1)
Doncel, Maria (1)
University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2021 (1)

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