Band Mixing in Deformed Nuclei

摘要

Experimental data on the energy structure of rotational bands in rare-earth even-even deformed nuclei are considered. The analysis of the dependence of inertial parameters on the angular momentum of rotational levels allowed us to establish the existence of mutual interaction of neighboring rotational bands. Calculations are made in the framework of the model of two-band Coriolis mixing. Model parameters are obtained for 14 pairs of bands, including 10 bands with K~π = 0~- and 1~-. The mixing parameter is observed to correlate with the structure levels within the quasiparticle-vibrational model. Calculations are carried out for ~(170)Yb with allowance made for the moment of inertia increasing with spin. New levels predicted by the rotational model are found.