Abstract
TheB(E2) values of gamma-ray cascades in interrotational-band transitions for high-spin states in deformed even-even nuclei in rare-earth and actinide regions have been calculated in the framework of the rotational vibrational model (RVM) and the Davydov-Rostovsky (DR) model. The transitions involved are 4+→2+, 6+→4+, 8+→6+, 10+→8+, 12+→10+ and 14+→12+. The calculated values have been compared with the experimental ones. In general, the RVM predictions show good agreement with the experimental values. The comparative study indicates that the phase transition of the rotational model from axially symmetric to asymmetric shape appears to take place atI=12 instead ofI=8.
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