  The influence of the tensor interaction of nucleons on the characteristics of
neutron-rich silicon and nickel isotopes was studied in this work. Tensor
forces are taken into account within the framework of the Hartree-Fock approach
with the Skyrme interaction. It is shown that the addition of tensor component
of interaction improves the description of the splitting between different
single-particle states and leads to a decrease in nucleon-nucleon pairing
correlations in silicon and nickel nuclei. Special attention was given to the
role of isovector tensor forces relevant for interaction of like nucleons.
