Abstract
Mn doped BaSO 4 powders were prepared by recrystallisation method and the formation of the compound was confirmed by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR) and scanning electron microscopic (SEM) studies. The thermally stimulated luminescence (TSL) studies of Mn doped BaSO 4 sample (doping concentration is 0.5 mol%) showed glow curve having two glow peaks at 147 and 225 °C after heating at a constant heating rate of 4 °C/s. Comparison of TL intensity of the most intensive glow peak of Mn doped BaSO 4 compound with that of undoped BaSO 4 shows that the addition of Mn impurity in BaSO 4 compound enhances the thermoluminescence (TL) intensity by about 3 times. The trap parameters associated with the glow peaks in X-irradiated BaSO 4:Mn sample were obtained by glow curve shape method. The thermoluminescence dose response, reproducibility and fading of the BaSO 4:Mn phosphor were also studied.
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