Analysis of electromagnetic transitions in nuclei 176, 178Hf

The structure of excited states and nonadiabatic effects manifested in the energies and probabilities of electromagnetic transitions are studied in the context of a phenomenological model taking into account the Coriolis mixing of the low-lying states of positive parity in rotational bands. Energies and the structure of wave functions of excited states are calculated. The calculated energies are in agreement with experimental data. The mixing effect is demonstrated to play an important role in the wave functions of vibrational states. The probabilities of E 2 and M 1 transitions are calculated. The theoretical values of ratios and multipole-mixing coefficients δ( E 2/ M 1) of transitions from the first and second β and γ vibrational bands are compared with the available experimental data.