Abstract:
Three semiconductor detectors (22) are installed at positions where incidence of radiation on a scintillation detector (21) is not blocked, at equal intervals centered on a central axis of the scintillation detector (21) and at equal angles with respect to a plane which is at a right angle to the central axis. An energy compensation factor is determined on the basis of an average pulse height value obtained from a second pulse height spectrum obtained by analog voltage pulses which are output from these semiconductor detectors (22), and energy characteristics of a high-range dose rate obtained by a direct-current voltage which is output from the scintillation detector (21) are compensated for.
Abstract:
The invention relates to a scintillator for imaging using X-rays or gamma rays or charged particles, including a network of glass capillaries (1) with an inner diameter no greater than 500 micrometres, said capillaries being filled with a polymer material (2) made up of at least: (i) a monomer selected from the group comprising vinyltoluene, styrene and vinylxylene and the isomers thereof; (ii) a cross-linking agent made up of a divinylbenzene or a dimethacrylate having a central chain which includes 1 to 12 carbon atoms; and (iii) triphenylbismuth, the cross-linking agent being provided to make up 10 wt % to 60 % wt of the mixture thereof with the monomer, and the triphenylbismuth being provided to make up at least 5 wt %, the cross-linking agent being provided in a ratio of 0.75 to 2.25 times the weight content of the triphenylbismuth.