Characterization and TSL dosimetric properties of Mn doped BaSO4 phosphor prepared by recrystallisation method

Mn doped BaSO4 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 BaSO4 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 BaSO4 compound with that of undoped BaSO4 shows that the addition of Mn impurity in BaSO4 compound enhances the thermoluminescence (TL) intensity by about 3 times. The trap parameters associated with the glow peaks in X-irradiated BaSO4:Mn sample were obtained by glow curve shape method. The thermoluminescence dose response, reproducibility and fading of the BaSO4:Mn phosphor were also studied.