title: Effect of differences in proton and neutron density distributions on fission barriers
abstract: The neutron and proton density distributions obtained in constrained Hartree-Fock-Bogolyubov calculations with the Gogny force along the fission paths of 232Th, 236U, 238U, and 240Pu are analyzed. Significant differences in the multipole deformations of neutron and proton densities are found. The effect on potential energy surfaces and on barrier heights is studied under an additional constraint by imposing similar spatial distributions to neutrons and protons, as assumed in macroscopic-microscopic models.
authors.affiliation: Commissariat a l'Energie Atomique, Service de Physique Nucleaire, B.P. 12, 91680 Bruyeres-le-Chatel, France.
authors.initials: JF
authors.lastname: Berger
authors.initials: K
authors.lastname: Pomorski