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A Hybrid Multigroup/Continuous-Energy Monte Carlo Method for Solving the Boltzmann-Fokker-Planck Equation

J. E. Morel, Leonard J. Lorence, Jr., Ronald P. Kensek, John A. Halbleib, D. P. Sloan

Nuclear Science and Engineering / Volume 124 / Number 3 / November 1996 / Pages 369-389

Technical Paper /

A hybrid multigroup/continuous-energy Monte Carlo algorithm is developed for solving the Boltzmann-Fokker-Planck equation. This algorithm differs significantly from previous charged-particle Monte Carlo algorithms. Most importantly, it can be used to perform both forward and adjoint transport calculations, using the same basic multigroup cross-section data. The new algorithm is fully described, computationally tested, and compared with a standard condensed history algorithm for coupled electron-photon transport calculations.