NUCLEAR-DEFORMATION IN THE SU(Q)(2) ROTOR MODEL

Based on the previously established consistency between the SU(q)(2) r otor model and hybrid model descriptions of rotational spectra, the qu antum algebraic parameter tau is connected with the deformation parame ter beta as well as with the B(E2; 2(1)+ --> 0(1)+) transition probabi lities of deformed nuclei. The correlations obtained are supported by the experimental data and allow one to consider tau as a relevant meas ure of decrease in nuclear deformation.