Position-sensitive radiation detector

摘要

A position-sensitive radiation detector has a multi-layer scintillator assembly coupled to a position-sensitive photo-detector. Individual scintillator blocks of rectangular solid form in each scintillator layer are optically isolated by a reflecting agent such as BaSO4, and the adjacent layers are optically coupled by a coupling agent such as silicon grease. In the case of the scintillator assembly of n layers, the scintillator blocks in one layer are staggered with those in the adjacent layer by one nth of the width of each block. In addition to information on a horizontal position, information on the depth of radiation absorption can be obtained by calculating the centroid or variance of a spatial distribution of light outputted from the scintillator assembly.