Elsevier

Nuclear Physics A

Volume 563, Issue 1, 11 October 1993, Pages 129-161
Nuclear Physics A

Study of band structures and crossings in 179Os

https://doi.org/10.1016/0375-9474(93)90013-NGet rights and content

Abstract

High-spin states in 179Os have been populated by the (34S, 5n) reaction and were studied with the γ-spectrometer OSIRIS. The three previously known bands were extended to higher spins and four new bands were established. From branching and mixing ratios, B(M1)/B(E2) ratios and gK factors were extracted, which have been utilized for configuration assignments. The bands show large differences in the crossing features. Their alignment behaviour is probably determined by shape effects and the rotation alignment of an i132 quasineutron pair. The i132 quasi neutron sequences of opposite signature show a significantly different backbending behaviour indicating that they do not correspond to the same nuclear shape or that the crossing bands are not both of (vi132)3 configuration.

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  • Cited by (9)

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    1

    Permanent address: Faculty of physics, University of Sofia, BG-1126 Sofia, Bulgaria.

    2

    Permanent address: Institute of Nuclear Research and Nuclear Energy, BG-1184 Sofia, Bulgaria.

    3

    Permanent address: Institute of Experimental Physics, University of Warsaw, PL-00681 Warsaw, Poland.

    4

    Present address: Schuster Laboratory, University of Manchester, GB-Manchester M13 9PL, UK

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