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Calcium sulphate activated with cerium IV and europium III using the free-flow polytetrafluoroethylene (PTFE, Teflon) as bonder were produced by the stamping method, developed by the collaboration of Tecnoflon industries, from crystals growth according to a new variation of the slow evaporation method, also described in this study, with Eu and Ce concentrations of respectively 0.15 mol% and 0.16 mol% in the precursory acid solution. The developed personal dosimeter consist of five detectors adhered to a 30 x 48 mm polyvinyl chloride (PVC) card 95% mat to light in the infrared to ultraviolet wavelengths, identical to the access cards used by IPEN staff, by a 10 x 35 mm adhesive strip of the same material and it passed the acceptance tests required by Brazilian national regulatory committee for appliance in individual monitoring of external exposure services. The own detector is considered a dosimeter as far as clinical dosimetry is concerned and it passed the acceptance tests suggested by the International Atomic Energy Agency in the Technical Report Series No 398, Absorbed Dose Determination in External Beam Radiotherapy: An International Code of Practice for Dosimetry based on Standards of Absorbed Dose to Water, [TRS-398, IAEA, 2000] adopted as the dosimetry protocol by most hospitals. Hence, the developed dosimeters can be applied in the individual monitoring for external exposure and in the clinical dosimetry, having the radiation type and energy differentiation and the cost reduction as the key advantages over the currently used thermoluminescent dosimeters in such applications.

Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons