Abstract
A γ-vibrational degree of freedom is incorporated into the particle-symmetric rotor model. The effects of γ-vibration on a high- j rotational band are studied. A characteristic signature splitting of the energy spectra is found to favor the presence of the interaction with the γ-vibration. E2 and M1 intraband transition probabilities of a high- j rotational band are better reproduced in a strongly deformed nucleus when the interaction with the γ-vibration is taken into account. It is found that the interaction with the γ-vibration induces a similar signature-dependent oscillation in E2 transition probabilities to that of the triaxial rotor-particle model.
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