The Development of a Parameterized Scatter Removal Algorithm for NMIS Imaging

摘要: Neutron radiography is a powerful investigative technique for analyzing the interior structure of an object. If true attenuation neutrons at each position in object can be measured, coefficients computed and used to identify materials inside However, scattered will contribute measured neutron flux reduce attenuation. The Nuclear Materials Identification System (NMIS) uses time-tagged electronically collimated D-T source this effect; however, some scattering component remains. This work Monte Carlo simulations calculate variety scenarios. scenario was fit using Gaussian distribution derive point scatter function. These functions were develop parameterized removal algorithm that remove wide range scenarios based on operator inputs. process discussed detail. Examples simulated experimental measurements are test validate algorithm.