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Interplay between particle and core ecitations in $^{133}$Sb

Abstract : The decay of the one-proton valence nucleus 133Sb is studied using the cold-neutron induced fission of 235U and 241Pu targets. The experiment is performed at the ILL reactor in Grenoble, using a highly efficient HPGe array, also coupled to fast LaBr3(Ce) scintillators. High-spin excited states above the 16.6 s isomer are observed, and the lifetime of the 13/2+ and 15/2+ states is measured by fast-timing techniques, revealing a complex nature of the wave functions. The experimental results are well-interpreted by a newly developed microscopic model which takes into account the coupling between the valence proton and excitations (both collective and noncollective) of the doubly magic 132Sn core.
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Submitted on : Tuesday, April 25, 2017 - 9:21:50 AM
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G. Bocchi, S. Leoni, B. Fornal, G. Colò, P.F. Bortignon, et al.. Interplay between particle and core ecitations in $^{133}$Sb. Zakopane Conference on Nuclear Physics “Extremes of the Nuclear Landscape”, Aug 2016, Zakopane, Poland. pp.595-600 ⟨10.5506/APhysPolB.48.595⟩. ⟨in2p3-01513383⟩

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