Abstract
The Coulomb excitation of by 125 MeV projectiles has been studied using γ ray spectroscopic techniques. On the basis of supersymmetry considerations, the observation of new levels, B(E2) ratios, and B(E2) values, a new assignment of negative-parity states within the U(6/12) multi-j supersymmetry scheme of the interacting-boson-fermion model is proposed for the 〈,,〉-(τ ,)=〈7,0,0〉-(2 ,0) and 〈6,1,0〉-(2,0) quadruplets. With this classification the simultaneous description of the low lying and levels within the framework of the supersymmetry scheme is greatly improved. The predicted E2 branching ratios for the decay of the (,)-L=(2,0)-4 levels in are well reproduced, while for the decay of the (2,0)-2 levels discrepancies occur in both the new and the old classification.
- Received 9 July 1986
DOI:https://doi.org/10.1103/PhysRevC.34.1958
©1986 American Physical Society