Octupole correlations in the structure of 0(2)(+) bands in the N=88 nuclei Sm-150 and Gd-152
- P. Bvumbi, S.
- F. Sharpey-Schafer, J.
- M. Jones, P.
- M. Mullins, S.
- M. Nyako, B.
- Juhasz, K.
- A. Bark, R.
- Bianco, L.
- M. Cullen, D.
- Curien, D.
- E. Garrett, P.
- T. Greenlees, P.
- Hirvonen, J.
- Jakobsson, U.
- Kau, J.
- Komati, F.
- Julin, R.
- Juutinen, S.
- Ketelhut, S.
- Korichi, A.
- A. Lawrie, E.
- Lawrie, J.J.
- Leino, M.
- E. Madiba, T.
- N. T. Majola, S.
- Maine, P.
- Minkova, A.
- J. Ncapayi, N.
- Nieminen, P.
- Peura, P.
- Rahkila, P.
- L. Riedinger, L.
- Ruotsalainen, P.
- Saren, J.
- Scholey, C.
- Sorri, J.
- Stolze, S.
- Timar, J.
- Uusitalo, J.
- A. Vymers, P.
DOIAbstract
Knowledge of the exact microscopic structure of the 0(1)(+) ground state and first excited 0(2)(+) state in Sm-150 is required to understand the branching of double beta decay to these states from Nd-150. The detailed spectroscopy of Sm-150 and Gd-152 has been studied using (alpha, xn) reactions and the gamma-ray arrays AFRODITE and JUROGAM II. Consistently strong E1 transitions are observed between the excited K-pi = 0(2)(+) bands and the lowest negative parity bands in both nuclei. These results are discussed in terms of the possible permanent octupole deformation in the first excited K-pi = 0(2)(+) band and also in terms of the "tidal wave" model of Frauendorf. DOI: 10.1103/PhysRevC.87.04433
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