Elsevier

Nuclear Physics A

Volume 366, Issue 2, 17 August 1981, Pages 281-298
Nuclear Physics A

Strongly interacting bands in 170Hf

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Abstract

High-spin states in 170Hf have been excited by the reaction 158Gd(16O, 4n). The yrast band has been observed up to the Iπ = 26+ member and a new odd-spin negative-parity side band is established up to Iπ = 25. The consequences of strong-band interactions in this nucleus are discussed. The band crossings observed are compared with those in neighbouring odd-A nuclei and the cranked shell model. An apparent failure of this model with constant pairing to predict band-crossing frequencies and alignments simultaneously in the yrast and side bands is discussed. Average values of 2L(2)band2 are presented for the “rotational-like” continuum cascades at the angular frequencies of the pairing phase transition and are compared with similar values for the yrast cascade.

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    Permanent address: Department of Physics, University of Manchester, UK.

    ††

    Permanent address: Institute of Nuclear Physics, Cracow, Poland.

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