The size and shape of the neutron and proton density distributions obtained in the Hartree--Fock--Bogoliubov (HFB) calculations with the Gogny force D1S are investigated. The radial density distributions at distances far from nuclear surface are analyzed. Significant differences in the multipole deformations of neutron and proton densities along the fission paths are found. The effect of an additional constraint imposing the same size and deformation of neutrons and protons distributions on barrier heights is studied.

PACS numbers: 21.24.Dr, 21.30.Fe, 21.60.Jz