High dose dosimetry using glass detectors in electron beams

The suitability of four different kinds of commercial glass samples for high dose dosimetry in electron beams was verified, with the main objective being to obtain a system that would allow immediate confirmation of irradiation (by colour changes in the material) as well as rapid and economic dose evaluation. Calibration curves were obtained through optical absorption and thermoluminescence measurements, the glass detectors being irradiated with electron beams of 1.06 MeV from a Dynamitron accelerator. The thermal fading at room temperature was studied over 54 days. The results show that glass samples can be utilized as reusable routine dosimeters, with the main advantage of very low cost, using relatively simple readout equipment as a densitometer or a single beam spectrophotometer, using non-destructive techniques and hence allowing repetition of the measurements if necessary. (author). 8 refs, 5 figs