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 of an additional constraint imposing similar spatial distributions to neutrons and protons, as assumed in macroscopic-microscopic models, is studied.

5 pages in Latex, 4 figures in eps

References in corpus (4)

• Nuclear Ground-State Masses and Deformations
• Simple Formula for Nuclear Charge Radius
• Ground state properties of the $\beta$ stable nuclei in various mean field theories
• Isospin Dependence of Proton and Neutron Radii within Relativistic Mean Field Theory

Cited by in corpus (10)

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• Systematics of Fission Barriers in Superheavy Elements
• Microscopic description of cluster radioactivity in actinide nuclei
• Third minima in thorium and uranium isotopes in a self-consistent theory
• $\alpha$-Decay Lifetime in Superheavy Nuclei With $A>282$
• Generalized Bose-Einstein Condensation
• Fission barriers in neutron-proton isospin plane for heavy neutron-rich nuclei
• Liquid Drop Model with Different Neutron versus Proton Deformations
• Polarized electric dipole moment of well-deformed reflection asymmetric nuclei
• Neck configuration of Cm and Cf nuclei in the fission state within relativistic mean field formalism