Description: A pseudo two-dimensional collision probability method for calculating plate and pin cell flux distributions has been developed, tested against Monte Carlo calculations, and has been found to yield collision probabilities which are in error less than 2%. In both the plate and pin cell cases, the pseudo 2-D collision probability methods have been shown to be as accurate as direct collision probability methods for the geometries of interest in ZPPR critical assembly analysis. The computational efficiency of the pseudo 2-D method is approximately the same as standard 1-D methods.
Creator: Smith, K. S.
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