Prolate-spherical shape coexistence at N=28 in S44

C. Force, S. Grévy, L. Gaudefroy, O. Sorlin, L. Cáceres, F. Rotaru, J. Mrazek, N. L. Achouri, J. C. Angélique, F. Azaiez, B. Bastin, R. Borcea, A. Buta, J. M. Daugas, Z. Dlouhy, Zs Dombrádi, F. De Oliveira, F. Negoita, Y. Penionzhkevich, M. G. Saint-LaurentD. Sohler, M. Stanoiu, I. Stefan, C. Stodel, F. Nowacki

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The structure of S44 has been studied by using delayed γ and electron spectroscopy. The decay rates of the 02 + isomeric state to the 21 + and 01 + states, measured for the first time, lead to a reduced transition probability B(E2:2 1 +→02 +)=8.4(26)e 2fm4 and a monopole strength ρ2(E0:02 +→01 +)=8.7(7)×10-3. Comparisons to shell model calculations point towards prolate-spherical shape coexistence, and a two-level mixing model is used to extract a weak mixing between the two configurations.

Original languageEnglish
Article number102501
JournalPhysical review letters
Issue number10
Publication statusPublished - Sep 1 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Force, C., Grévy, S., Gaudefroy, L., Sorlin, O., Cáceres, L., Rotaru, F., Mrazek, J., Achouri, N. L., Angélique, J. C., Azaiez, F., Bastin, B., Borcea, R., Buta, A., Daugas, J. M., Dlouhy, Z., Dombrádi, Z., De Oliveira, F., Negoita, F., Penionzhkevich, Y., ... Nowacki, F. (2010). Prolate-spherical shape coexistence at N=28 in S44. Physical review letters, 105(10), [102501].