Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-10-07
Phys.Rev.C80:054313,2009
Physics
Nuclear Physics
Nuclear Theory
18 pages, 24 figures, to be published in Physical Review C
Scientific paper
10.1103/PhysRevC.80.054313
Hartree-Fock-Bogoliubov calculations of hot fission in $^{240}\textrm{Pu}$ have been performed with a newly-implemented code that uses the D1S finite-range effective interaction. The hot-scission line is identified in the quadrupole-octupole-moment coordinate space. Fission-fragment shapes are extracted from the calculations. A benchmark calculation for $^{226}\textrm{Th}$ is obtained and compared to results in the literature. In addition, technical aspects of the use of HFB calculations for fission studies are examined in detail. In particular, the identification of scission configurations, the sensitivity of near-scission calculations to the choice of collective coordinates in the HFB iterations, and the formalism for the adjustment of collective-variable constraints are discussed. The power of the constraint-adjustment algorithm is illustrated with calculations near the critical scission configurations with up to seven simultaneous constraints.
Gogny Daniel
Younes Walid
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