Nuclear orientation of 152TbGd:: The E0 multipolarity admixtures in the ΔI=0 transitions of 152Gd

Directional distribution of gamma rails following the decay of Tb-152 oriented in a gadolinium host at low temperature has been studied. The gamma-ray anisotropies of transitions in Gd-152 were measured and multipole mixing ratios delta(E2/M1) were determined. Part of our results is presented here and attention is paid to investigation of the E0 multipolariry admixtures which were observed in many DeltaI = 0 transitions of Gd-152. Among them the E2/M1 mixing ratios for 2 --> 2 and 4 --> 4 transitions from the beta-vibrational (K-pi - 0(+)) and gamma-vibrational (K-pi = 2(+)) bands to the ground-state band were observed, and the E0/E2 probability ratios, X(E0/E2), were determined.