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 1173K for 1h and then irradiated from 0.1 to 1000Gy gamma doses. Low energy dependence was analyzed too by irradiating with X-rays in the range of 16–145keV. The results were normalized to the energy (1252keV) of 60Co and they were compared with those obtained using the commercial dosimeters TLD-100. Also the kinetic parameters were determined by deconvolution of glow curve.
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