Trapping parameters determination and modeling of the thermoluminescence process in SiO2-P2O5 vitroceramics doped with different Y2O3 concentrations

The xY2O3∙(60 − x)P2O5·40SiO2 vitroceramic compounds exhibited excellent TL output following beta irradiation, especially when doped with high Y2O3 concentrations, as showed in a recent work conducted by Biró et al., 2015. In the first section of this paper, the previous recorded TL glow peaks were further analyzed and their corresponding kinetic parameters such as an order of kinetics (b), trap depth (E) and frequency factor (s) were determined using the Chen’s peak shape method. In the second section, the thermoluminescence characteristics of SiO2-P2O5 doped with different Y2O3 concentrations were simulated using the TTOR (Two traps & one recombination center) model. All calculated TL glow curves were in good agreement with the experimental results.