Selfconsistent calculations of fission barriers in the Fm region

Details Selfconsistent calculations of fission barriers in the Fm region Selfconsistent calculations of fission barriers in the Fm region

2002-03-21

arxiv.org/abs/nucl-th/0203057v1

Phys.Rev. C66 (2002) 014310

Physics

Nuclear Physics

Nuclear Theory

29 pages in LaTeX including 14 figures

Scientific paper

10.1103/PhysRevC.66.014310

The fission barriers of the nuclei 254Fm, 256Fm, 258Fm, 258No and 260Rf are investigated in a fully microscopic way up to the scission point. The analysis is based on the constrained Hartree-Fock-Bogoliubov theory and Gogny's D1S force. The quadrupole, octupole and hexadecapole moments as well as the number of nucleons in the neck region are used as constraints. Two fission paths, corresponding to the bimodal fission, are found. The decrease with isotope mass of the half-life times of heavy Fm isotopes is also explained.

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