Patent ID: 6333502
Filing Date: 2001-12-25
Classification: G01T

Abstract:
A radiation measurement system comprising:a radiation detector including at least a scintillator, a main light guide, and a wavelength shift fiber, having first and second ends, for absorbing a scintillation light entering said main light guide from said scintillator to re-emit said absorbed scintillation light from said first and second ends;a pair of signal processing parts for converting said scintillation light leaving said first and second ends of said wavelength shift fiber of said radiation detector into first and second electric pulse signals, respectively;pulse width setting parts, setting said first and second electric pulse signals converted by said signal processing parts to be two or more pairs of first and second pulse signals, said pairs each having different pulse widths;coincidence processing parts, each carrying out a coincidence processing of each pair of said first and second pulse signals set by said pulse width setting parts, to output coincidence processed data corresponding to each pair of said first and second pulse signals, respectively; anda data processing part for calculating a radiation intensity based on said coincidence processed data and for making a correction in said radiation intensity on the basis of the relationship between said coincidence processed data in view of a temperature dependency of said scintillator of said radiation detector, when said radiation intensity is calculated.