Davydov-Chaban Model Formalism with Davidson Potential

The Davydov-Chaban model formalism with the Davidson potential for describing the spectrum of excited collective states of heavy even-even nuclei is considered. At describing the energy levels of the ground-state-, [Formula: see text]- and [Formula: see text]-bands, the K-mixing effect created by model triaxial rotations is taken into account. The energy spectra of the ground-state-, [Formula: see text]- and [Formula: see text]-bands of heavy even-even nuclei: [Formula: see text]Sm [Formula: see text]Gd, [Formula: see text]Dy, [Formula: see text]Er, [Formula: see text]Hf, [Formula: see text]Yb, [Formula: see text]W, [Formula: see text]Th, [Formula: see text]U and [Formula: see text]Pu are considered. The coupling of the ground-state band and the [Formula: see text]-band is also considered. In the framework of presented model formalism intra ground-state-band reduced E2-transition probabilities were studied.