Abstract
The mechanoluminescence (ML) of γ-irradiated coloured powder of NaBr:Ce(0.1–10 mol%) phosphor are reported in this paper and compared with pure NaBr material. All samples were prepared by wet-chemical method. Single isolated ML glow curve is observed in all samples. The variation of peak ML intensity with gamma exposure and with different concentration of Ce3+ doped, in NaBr:Ce are studied. ML intensities are found to be dependant on concentrations of Ce3+ and gamma radiation dose. The variation of peak ML intensity of NaBr:Ce(0.5 mol%) with different gamma dose is found as sublinear up to 2.5 kGy high dose of γ-irradiation.
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