Beta energy dependence of the Ag-doped phosphate glass detector response

摘要

The radiophotoluminescent (RPL) signal of Ag-doped phosphate glass detectors to beta-radiation is significantly influenced by beta-particle energy. We investigate the beta-particle energy and angular dependence of incident beta radiation on the RPL signal emitted from the detectors. The results of measurements and MCNPX simulations show that the detector sensitivity decreases with increasing beta-energy and has little dependence on the angle of incidence. The consequence is that a dose assessment will be strongly biased if the detector calibration is performed with beta-rays different from those monitored.