Abstract
Polyvinyl chloride (PVC) film dyed with malachite green was studied for high-dose radiation dosimetry using visible spectrophotometry. A linear relationship between the relative absorbance and the absorbed dose at the wavelength 628 nm in the range of 0–125 kGy was found. The effect of dose rate, irradiation temperature, film thickness and dye intensity were found not to influence the response. The effects of shelf life and the post-irradiation storage in darkness and indirect daylight conditions on dosimetry performance were discussed.
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