Verification of an Efficient Monte Carlo Model that Interchanges the Geometric Shapes of Plane Source and Detector in Radiation Transport Calculation

抄録

An efficient Monte Carlo computational model has been used to calculate the radiation transport when radioactive materials are deposited on an infinite plane surface, in which the geometrical shapes of the plane source and the point detector are interchanged. This transformation was verified by comparing the calculation results with the theoretical values only for the primary (unscattered) photons. It is desirable to confirm the validity of the transformation for both unscattered and scattered photons. The extension of the transformation to a finite plane source has not been verified yet. In this study, we performed calculations with and without transformation via the Monte Carlo method, and the results were compared with each other, then confirming the validity of the transformed model.