Abstract
Some plastic sheets manufactured or commercially available in Pakistan have been tested as radiation dosimeters for cobalt-60 γ-rays. Radiation induced colouration in the plastics have been measured spectrophotometrically. The results show that 2 mm thick clear poly(methyl methacrylate) (PMMA) can be used as radiation dosimeter up to 45 kGy when absorption measurements are made at 305 nm and 314 nm; whereas 1 mm thick clear poly(vinylchloride) (PVC) is useful up to 30 kGy when measured at 396 nm. The response of PMMA dosimeter is stable for at least 15 days and that for PVC for 30 days, when stored under ambient conditions after irradiation. Post-irradiation stability at various temperatures (−10 to 55°C) has also been studied.
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Khan, H.M., Ahmad, G., Sattar, A. et al. Radiation dosimetry using clear PMMA and PVC in the range of 5–45 kGy. Journal of Radioanalytical and Nuclear Chemistry, Articles 125, 127–134 (1988). https://doi.org/10.1007/BF02041757
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DOI: https://doi.org/10.1007/BF02041757