Hyperbolic Dependence of Moment of Inertia on ω² in Bands Involving vi_13/2 Orbital and its Application in Configuration Identification

The so-called hyperbolic dependence of apparent moment of inertia on square of rotational frequency is developed to the bands involving vi_13/2quasineutron around A~160 lighter rare-earth region. This can be explained as a characteristic of strongly Coriolis mixing in the high-j unique-parity bands. As applications of such an effect, the previously proposed assignments of band x of ¹⁶⁰Ho, π1/2^-541O vi_13/2 band of ¹⁷⁰Ta, as well as band B of ¹⁶⁸Lu have been reviewed respectively.