Several E2 decay schemes for the low-lying T = 0 odd-parity states of 40Ca are discussed. It is shown that a pure RPA description of these decays is not satisfactory. Gerace and Green have mixed these pure RPA states with 3p-3h deformed states to describe the T = 0 odd-parity states. In the calculation of the E2 rates with their wave functions, the intrinsic quadrupole moment of the band is taken to be a parameter so that several cases may be considered. It is thus shown that only once choice for the intrinsic quadrupole moment leads to a consistent explanation of the B(E2) values. Furthermore, the choice for the intrinsic quadrupole moment is the only one which is consistent with those of the even parity states in 40Ca.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics