Two-dimensional description of the vibrational motion in actinide nuclei

Stiffness and mass parameters as well as the energies of the vibrational states in some actinide nuclei have been calculated. Only quadrupole and hexadecapole degrees of freedom have been included. The calculations have been performed in the vicinity of the first minimum of the energy surface, by making use of three different approaches: Mottelson-Nilsson-Bes-Szymanski, Strutinsky and microscopic ones. The results obtained in the calculations have been compared. (author)