The darkening of γ-irradiated glass was related to the binding of Si-O and Sn-O, and the binding of Na-O. The dosimetric range of glass color change was evaluated by colorimetry, UV-Vis spectrophotometry and ESR. Colorimetry and UV-Vis spectrophotometry, revealed linear changes up to 9 kGy. For the calibration curve of γ-irradiation, the signal of g = 2.01 observed by ESR responded most sensitively with a linear increase with up to 12 kGy.
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