Shape study of the N=Z nucleus Kr 72 via β decay
- Briz, J. A.
- Nácher, E.
- Borge, M. J G
- Algora, A.
- Rubio, B.
- Dessagne, Ph
- Maira, A.
- Cano-Ott, D.
- Courtin, S.
- Escrig, D.
- Fraile, L. M.
- Gelletly, W.
- Jungclaus, A.
- Le Scornet, G.
- Maréchal, F.
- Miehé, Ch
- Poirier, E.
- Poves, Alfredo
- Sarriguren, P.
- Taín, J. L.
- Tengblad, O.
DOIAbstract
The β decay of the N=Z nucleus Kr72 has been studied with the total absorption spectroscopy technique at ISOLDE (CERN). A total B(GT)=0.79(4)gA2/4π has been found up to an excitation energy of 2.7 MeV. The B(GT) distribution obtained is compared with predictions from state-of-the-art theoretical calculations to learn about the ground state deformation of Kr72. Although a dominant oblate deformation is suggested by direct comparison with quasiparticle random phase approximation (QRPA) calculations, beyond-mean-field and shell-model calculations favor a large oblate-prolate mixing in the ground stateJ.A.B. acknowledges the predoctoral grant BES-2008-009412 associated with the research project FPA2007-62170 funded by Ministerio de Ciencia e In...
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