Observation of the lowest energy gamma-ray in any superdeformed nucleus : 196Bi
A. Prevost, B. Rosse, M. Meyer, N. Redon, C. Schmitt, O. Stezowski, P. Lautesse, A. Astier, I. Deloncle, M. -G. Porquet, T. Duguet, H. Hubel, E. Mergel, D. Rossbach, N. Nenoff, G. Schonwasser, D. Curien, G. Duchene, B. J. P. Gall, J. Robin, J. P. Vivien
Abstract
New results on the superdeformed 196Bi nucleus a re reported. We have observed with the EUROBALL IV γ-ray spectrometer array a superdeformed trans ition of 124 keV which is the lowest observed energy γ-ray in any superdeformed nucleus. We have de velopped microscopic cranked Hartree-Fock-Bogoliubov calculations using the SLy4 effective force and a realistic surface p airing which strongly support the Kπ=2-(π[651]1/2 ν[752]5/2) assignment of this su perdeformed band.
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