Abstract
In the Hartree-Fock-Bogolyubov approximation and the axial symmetry of nuclei with Skyrm forces SkM*, the properties of U with A = 220 – 232 and Th with A = 218 – 230 isotopes were calculated. In addition, the properties of U and Th near the neutron drip line A = 280 – 292 were calculated. Pairing of nucleons in nuclei is described by pairing forces of zero radius of action of a mixed type with different sets of pairing force constants. In our calculations, we used constrained conditions on the parameters of quadrupole β2 and octupole β3 deformations of nuclei. It is shown that for the considered U isotopes, as well as Th isotopes, the deformation of the β3 nuclei strongly depends on the choice of the parameters of the nucleon pairing force.
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