Octupole correlations in the structure of O2 bands in the N=88 nuclei150Sm Gd
Date
2013Author
Bvumbi, S.P.
Sharpey-Schafer, J.F.
Jones, P.M.
Mullins, S.M.
Metadata
Show full item recordAbstract
Knowledge of the exact microscopic structure of the 01
+ ground state and first excited 02
+ state in 150Sm is
required to understand the branching of double β decay to these states from 150Nd. The detailed spectroscopy of
150Sm and 152Gd has been studied using (α,xn) reactions and the γ -ray arrays AFRODITE and JUROGAM II.
Consistently strong E1 transitions are observed between the excited Kπ = 02
+ 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 Kπ = 02
+ band and also in terms of the “tidal wave” model of Frauendorf.