Theoretical consideration on thermoluminescence response

Publisher Website
Google Scholar
Abstract
A new model is proposed for explaining the unsolved phenomena in the thermoluminescence properties, which are the nonlinear response to exposure, the postirradiation and test‐irradiation dose dependences of the sensitization phenomena, the dose effect of the energy dependence, and changes in the shape of the glow curve with the exposure. This model is based on the following assumptions: (1) In the first step of the carrier capture reaction, the sum of the number of trapped carriers in each trapping level is restricted to the number of released carriers, (2) the capture reaction between the released carriers and traps is irreversibly consecutive and follows first‐order kinetics, and (3) passage of the charged particle through the phosphor brings about an exothermic effect and reaction temperature is a sum of irradiation and exothermic temperatures. As a result, the number of captured carriers in the ith trapping level is given as a function of irradiation temperature, exothermic temperature, activation energy of the irreversibly consecutive reaction, stopping power and flux of the charged particle in the phosphor, and the number of initial traps. The model can qualitatively explain the unsolved phenomena in thermoluminescence response.

This publication has 8 references indexed in Scilit: