Abstract: In the dynamic analysis of thermoluminescence, it is common to encounter the glow curve with multiple peaks overlapped to some extent. Step annealing method uses pre-heating to gradually remove the influence of low temperature peak components, and to achieve the separation of multiple peaks to a certain extent, which plays an important role in the analysis of complex glow curve. In this paper, MatLab program is used to simulate the glow curves under various conditions according to the first-order dynamic model, and the step-annealing method is used to simulate the glow curves during the secondary heating after the process of pre-heating and rapid cooling. The initial rising slope of the glow curve of secondary heating is analyzed, and the activation energy (trap depth) is obtained. The calculated results are in good agreement with the pre-set dynamic parameters.

Key words: thermoluminescence, dynamic analysis of thermoluminescence, step annealing, initial rising slope, activation energy (trap depth)