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High-K States in the Odd-Odd Nuclide Re-180

El-Masri, H M, Walker, P M, Dracoulis, G D, Kibedi, T, Byrne, A P, Bruce, A M, Orce, J N, Emmanouilidis, A, Cullen, D M, Wheldon, C and Xu, F R (2005) High-K States in the Odd-Odd Nuclide Re-180 Physical Review C, 72 (5). ISSN 0556-2813

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Abstract

The structure of the deformed, doubly odd nuclide Re-180 has been studied by gamma-ray and conversion-electron spectroscopy using the Yb-174(B-11,5n) reaction with a pulsed 71 MeV beam of B-11 ions. Several of the previously known intrinsic states have been given revised spin and parity assignments. Rotational bands are observed with K-pi=(4(+)),(5(-)),(7(+)),8(+),9(-),13(+),14(-),15(-),16(+),21(-), and (22(+)). Among these, a four-quasiparticle t band is identified, which is already energetically favored at its bandhead compared to the corresponding two-quasiparticle band; and two six-quasiparticle bands are identified and associated with a tau=13 mu s isomer. The observed structures, including g factors and alignments, are interpreted with the aid of Nilsson-plus-BCS calculations and configuration-constrained potential energy surface calculations. Reduced-hindrance values are obtained for K-forbidden transitions, illustrating the important role of the K quantum number for near-yrast isomers.

Item Type: Article
Additional Information: Published in <i>Physical Review C,</i> Vol. 72, Iss. 5. Copyright 2005 American Physical Society. Click <a href=http://prc.aps.org/>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/319

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