Evidence for shape coexistence at medium spin in 76Rb
/ Authors
R. Wadsworth, I. Ragnarsson, B. Carlsson, Hai-Liang Ma, P. Davies, C. Andreoiu, R. Austin, M. Carpenter, D. Dashdorj, S. Freeman
and 14 more authors
P. Garrett, J. Greene, A. Gorgen, D. Jenkins, F. Johnston-Theasby, P. Joshi, A. Macchiavelli, F. Moore, G. Mukherjee, W. Reviol, D. Sarantites, D. Seweryniak, C. Svensson, J. J. Valiente-Dob'on
/ Abstract
Four previously known rotational bands in Rb-76 have been extended to moderate spins using the Gammasphere and Microball gamma ray and charged particle detector arrays and the Ca-40(Ca-40,3pn) reaction at a beam energy of 165 MeV. The properties of two of the negative-parity bands can only readily be interpreted in terms of the highly successful Cranked Nilsson-Strutinsky model calculations if they have the same configuration in terms of the number of g(9/2) particles, but they result from different nuclear shapes (one near-oblate and the other near-prolate). These data appear to constitute a unique example of shape coexisting structures at medium spins. (C) 2011 Elsevier B.V. All rights reserved.
Journal: Physics Letters B