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Shape study of the N = Z nucleus Kr-72 via beta decay

AuthorsBriz, José Antonio ; Nácher, Enrique ; García Borge, María José ; Algora, Alejandro ; Rubio, Berta ; Dessagne, Ph.; Maira-Vidal, A. ; Cano Ott, Daniel; Courtin, S.; Escrig, Diego ; Fraile, Luis M. ; Gelletly, W.; Jungclaus, Andrea ; Le Scornet, G.; Maréchal, F.; Miehé, Ch.; Poirier, E.; Poves, Alfredo ; Sarriguren, Pedro ; Taín, José Luis ; Tengblad, Olof
Issue Date30-Nov-2015
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 92: 054326 (2015)
AbstractThe beta decay of the N = Z nucleus Kr-72 has been studied with the total absorption spectroscopy technique at ISOLDE (CERN). A total B(GT) = 0.79(4)g(A)(2)/4 pi 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 Kr-72. 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 state. Published by the American Physical Society
Description10 pags.; 11 figs.; 2 tabs.; PACS number(s): 23.40.Hc, 29.30.Kv, 27.50.+e, 21.10.Pc; Open Access funded by Creative Commons Atribution Licence 3.0
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevC.92.054326
Identifiersdoi: 10.1103/PhysRevC.92.054326
issn: 0556-2813
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