THE SUQ(2) ROTATOR MODEL IN EXCITED COLLECTIVE BANDS OF EVEN DEFORMED-NUCLEI

The SUq(2) rotator model is used for separately fitting the beta(1)- a nd gamma(1)-bands of even rare earth and actinide collective nuclei. I t is shown that in the excited bands the violation of the exact SU(2) rotational symmetry is generally stronger than in the ground-state ban ds, indicating the presence of non-adiabatic perturbations. The physic al content of the parameter q as well as the implications on classific ation schemes for spectra of deformed nuclei are discussed. Prediction s of the SUq(2) model for B(E2) intraband transitions in excited bands are presented and the need for specific experimental data is pointed out.