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Effect of thermal treatment on TL response of CaSO₄:Dy obtained using a new preparation method
P R González1, E Cruz-Zaragoza, C Furetta
1Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, Ocoyoacac, Estado de México, Mexico. pedro.gonzalez@inin.gob.mx
Abstract:
We report the effect of thermal treatment on thermoluminescent (TL) sensitivity property of CaSO4:Dy obtained by a new preparation method at Instituto Nacional de Investigaciones Nucleares (ININ) of Mexico. Samples of phosphor powder were subjected to different thermal treatments respectively at 773, 873, 973 and 1,173K for 1h and then irradiated from 0.1 to 1,000 Gy gamma doses. Low energy dependence was analyzed too by irradiating with X-rays in the range of 16-145 keV. The results were normalized to the energy (1,252 keV) of (60)Co and they were compared with those obtained using the commercial dosimeters TLD-100. Also the kinetic parameters were determined by deconvolution of glow curve.
