STUDY OF OCTUPOLE DEFORMATION OF NUCLEI IN CHAIN OF ISOTONS IN THE REGION OF ACTINIDES IN THE MEAN FIELD APPROXIMATION

Calculations of the properties of even-even isotones N = 134 of nuclei with Z = 86–96 were carried out in the Hartree-Fock-Bogolyubov approximation, taking into account the axial symmetry of nuclei with forces Skyrme (SkM*, SLy4). Pairing of nucleons in nuclei is described by zero-range pairing forces of mixed type with different sets of pairing force constants. In the calculations we used constrained conditions on the parameters of the quadrupole and octupole deformations of the nuclei. It is shown that for the considered chain of isotones the octupole deformation of nuclei strongly depends on the choice of parameters of the nucleon pairing force and weakly depends on the type of parameterization of the Skyrme forces used in this study.