The γ 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 μs 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.

Interplay between particle and core excitations in 133Sb / G. Bocchi, S. Leoni, B. Fornal, G. Colò, P.F. Bortignon, D. Bazzacco, A. Blanc, S. Bottoni, N. Cieplicka Oryńczak, F.C.L. Crespi, G. De France, M. Jentschel, U. Koster, C. Michelagnoli, P. Mutti, J.M. Régis, G. Simpson, T. Soldner, B. Szpak, C.A. Ur, W. Urban. - In: ACTA PHYSICA POLONICA B. - ISSN 0587-4254. - 48:3(2017), pp. 595-600. ((Intervento presentato al convegno Conference on Nuclear Physics : Extremes of the Nuclear Landscape tenutosi a Zakopane nel 2016 [10.5506/APhysPolB.48.595].

Interplay between particle and core excitations in 133Sb

G. Bocchi
Primo
;
S. Leoni
Secondo
;
G. Colò;P.F. Bortignon;S. Bottoni;F.C.L. Crespi;
2017

Abstract

The γ 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 μs 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.
Physics and Astronomy (all)
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/512086
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