Analysis of the BeO thermoluminescent glow curve by the deconvolution method

Highlights: • Kinetic parameters and TL response as a function of dose of BeO were determined by two different deconvolution methods. • Glow curve of BeO obtained at a heating rate of 5 Ks-1 was resolved in two peaks at temperatures of approximately 477 and 586 K respectively. • TL response as a function of dose of BeO obtained by both deconvolution methods fit a quadratic function for first peak and a linear one for the second peak. - Abstract: Results of studying the behavior of the thermoluminescent glow curve of beryllium oxide (BeO) obtained in a wide range of absorbed doses are presented. The kinetic parameters and the TL response as a function of dose were determined using two deconvolution methods: Glow-Fit (Puchalska and Bilski 2006) and "tgcd" in "R" (Peng et al., 2016). Both methods showed that the glow curve of BeO obtained at a heating rate of 5 Ks⁻¹ can be resolved in two peaks at temperatures of approximately 477 and 586 K respectively, with an activation energy of 1.1 eV for both peaks. The Glow-Fit method assumes first-order kinetics; while the "tgcd" in "R" method allows to determine the order of kinetics, finding that both peaks follow a kinetic of first order. Regarding the TL response as a function of dose, it was found that the first peak exhibits a quadratic dependence while the second peak exhibits a linear behavior with respect to the dose throughout the dose range studied, thus showing great advantages for its application as a TL dosimeter.