Description of ground states of cluster nuclei with the collective variables

The adiabatic hyperspherical method for energetic spectra of cluster nuclei with the structure from a << core >> plus two valency nucleons has been proposed. The assumption about adiabatic character of the correlated movement of valency nucleons along the hyper radius R forms the basis of the method. The description is given with using hyperspherical coordinates of valency nucleons as collective variables