Biased Reaction Branching Variance Reduction for Monte Carlo Isotopic Inventory Methods

摘要

An accurate analog implementation of arnMonte Carlo isotopic inventory analysisrnalgorithm has been demonstrated with efficientrnparallel performance. In addition, a forcedrnreaction variance reduction technique wasrndemonstrated to improve the statisticalrnperformance and various figures of merit werernexplored to assess the overall efficiency. Thisrnwork focuses on the implementation of a biasedrnreaction branching variance reduction schemernthat allows for certain reaction pathways to bernpreferentially followed with adjustments in thernatoms weight to ensure a fair game. Thisrntechnique is primarily useful for isotopes that arernproduced directly by relatively rare reactionrnpathways. It is also an important precursor to thernimplementation of more sophisticated reactionrntree balancing schemes.