26 August 2010 Studies of x-ray-induced thermally stimulated luminescence properties of Mn2+-dDoped MgSO4 by using glow-curve deconvolution technique
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Abstract
Polycrystalline Mn2+ doped (0.5 wt%) MgSO4 has been prepared by using recrystallization method. The defect assisted thermally stimulated luminescence (TSL) properties of Mn2+ doped MgSO4 induced by X-rays, were studied in the dose range of 0.25 to 1.0 Gy. The resultant glow curves show an intensive glow peak around 475 K accompanied by one shoulder at 428 K. Computerized glow curve deconvolution tool is used to evaluate the effective trapping parameters and suggests quasi-continuous distribution of traps in the range of 0.50-1.08 eV. An important feature of this phosphor is its 'non-shifting Tm (peak temperature)' property when the sample is subjected to various doses of X-irradiation. TSL sensitivity of pure MgSO4 phosphor is enhanced with the incorporation of Mn2+ impurity. The TSL response of this sample as a function of absorbed dose up to 1.0 Gy suggests that it will be also very suitable for detecting very small exposures of low energy X-rays and γ-rays.
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J. Manam, S. Das, "Studies of x-ray-induced thermally stimulated luminescence properties of Mn2+-dDoped MgSO4 by using glow-curve deconvolution technique", Proc. SPIE 7806, Penetrating Radiation Systems and Applications XI, 78060K (26 August 2010); doi: 10.1117/12.860409; https://doi.org/10.1117/12.860409
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