Shape co-existence in 180Hg and delineation of the midshell minimum
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Dracoulis, G. D.
Stuchbery, A. E.
Macchiavelli, A. O.
Beausang, C. W.
Burde, J.
Deleplanque, M. A.
Diamond, R. M.
Stephens, F. S.
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Abstract
Excited states in 180Hg have been identified. Yrast states up to spin 16+ are assigned. The decay pattern observed is indicative of a shape co-existence similar to that in the heavier Hg isotopes. The prolate deformed band is higher in energy, relative to the "oblate band", than in 182Hg, establishing a clear minimum in the prolate-oblate energy difference near N = 103, midshell for the i 13 2 neutrons.
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Physics Letters B
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