Structure properties of ${}^{226}$Th and ${}^{256,258,260}$Fm fission fragments: mean field analysis with the Gogny force

Abstract

The constrained Hartree-Fock-Bogoliubov method is used with the Gogny interaction D1S to calculate potential energy surfaces of fissioning nuclei ${}^{226}$Th and ${}^{256,258,260}$Fm up to very large deformations. The constraints employed are the mass quadrupole and octupole moments. In this subspace of collective coordinates, many scission configurations are identified ranging from symmetric to highly asymmetric fragmentations. Corresponding fragment properties at scission are derived yielding fragment deformations, deformation energies, energy partitioning, neutron binding energies at scission, neutron multiplicities, charge polarization and total fragment kinetic energies.

15 pages, 23 figures, accepted for publication in Phys. Rev. C (2007)

References in corpus (3)

• Total Prompt Energy Release in the Neutron-Induced Fission of 235-U, 238-U, and 239-Pu
• Systematics of the first 2+ excitation with the Gogny interaction
• Fission modes of 256Fm and 258Fm in a microscopic approach

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