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Elsevier, Physics Letters B, 1-3(719), p. 83-88, 2013

DOI: 10.1016/j.physletb.2013.01.006

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Close near-degeneracy in a pair of four-quasiparticle bands in 194Tl

Journal article published in 2013 by P. L. Masiteng, E. A. Lawrie ORCID, T. M. Ramashidzha, R. A. Bark, B. G. Carlsson, J. J. Lawrie, R. Lindsay ORCID, F. Komati, J. Kau, P. Maine, S. M. Maliage, I. Matamba, S. M. Mullins, S. H. T. Murray, K. P. Mutshena and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

A pair of rotational bands associated with the pi h(9/2) circle times nu i(13/2)(-1) configuration at lower spins and with the pi h(9/2) circle times nu i(13/2)(-3) configuration at higher spins is found in Tl-194. The two 4-quasiparticle bands show exceptionally close near-degeneracy in the excitation energies. Furthermore close similarity is also found in their alignments and B(M1)/B(E2) reduced transition probability ratios. Such close near-degeneracy probably indicates chiral geometry in the angular momentum space. (c) 2013 Elsevier B.V. All rights reserved.