Application of commercial glasses for high dose measurement using the thermoluminescent technique

Commercial glasses under this study showed linear thermoluminescence (TL) response in gamma dose range 100 Gy to 10 kGy, glow peaks between 175 and 200 °C, fading under dark and room light 2.86–7.36% and 10.42–20.82%, respectively, in 24 h and 34.86–70.80% under sunlight in 5 h after exposure. The TL glass dosimetric results have been found to be reproducible within ±6.0%. Glasses have been observed as thermally unstable and its TL sensitivity reduces after annealing. The TL response of the glasses has been found to reduce by 7.40–51.49% after first annealing of the samples at 400 °C for 15 min. The trace element study suggests that presence of impurities has no role in TL sensitivity of glasses rather imperfections and dislocations in the lattice are the major contributor in the formation of TL centers. Commercial glasses can serve as good TL material for gamma irradiator and gamma chamber dosimetry. The various radiation parameters for glass TL dosimetry have been studied in detail and presented.