Thermoluminescence and ESR of γ-ray and pile-irradiated natural barite |
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| Authors: | NM Gupta JM Luthra MD Sastry |
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| Institution: | Chemistry Division, Bhabha Atomic Research Centre, Bombay 400085, India |
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| Abstract: | Thermoluminescence (TL) and electron spin resonance (ESR) studies of γ-ray and pile-irradiated natural barite have led to the identification of centres which act as electron or hole traps. Intense pile irradiation seems to help the formation of the S2O3-radical. The presence of cation vacancies, as indicated by TL glow curves, makes pile-irradiated (>1018 n cm-2 samples “immune” to further γ-irradiations as far as TL and ESR are concerned. |
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