Microscopic Calculation of 240Pu Scission with a Finite-Range Effective Force
Hartree-Fock-Bogoliubov calculations of hot fission in {sup 240}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 {sup 226}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.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 971399
- Report Number(s):
- LLNL-JRNL-413301; TRN: US1001189
- Journal Information:
- Physical Review C, vol. 80, no. 5, November 24, 2009, pp. 054313, Vol. 80, Issue 5
- Country of Publication:
- United States
- Language:
- English
Similar Records
Microscopic Calculations of 240Pu Fission
Microscopic approach of fission dynamics applied to fragment kinetic energy and mass distributions in {sup 238}U