Study of the CaSO4 thermoluminescent detector characteristics for environmental dosimetry

The CaSO4 thermoluminescent detectors doped with various activators are widely used in environmental dosimetry. These can be manufactured as powders, tablets and chips. In our institute, the CaSO4:Dy thermoluminescent detectors were obtained in tablet shape, with the following dimensions: 10 mm diameter and 0.8 mm thickness. Each tablet has a weight of 123 mg and contains in equal proportions thermo-luminophore powder and Teflon. The detectors have been obtained by pressing this mixture in a special mould. The detectors are used to measure the absorbed dose in air produced by X and gamma rays within the interval 30 keV - 3000 keV. The dosimetric parameters of the detectors, measured according to the international requirements, are in agreement with the reported literature data and standardization requirements. (authors)