Evaluation of the kinetic parameters of CaF₂:Tm (TLD-300) thermoluminescence dosemeters

The kinetic parameters of the first, third and fifth peaks of CaF2:Tm (TLD-300) dosemeters were determined experimentally using methods based on initial rise, peak shape, different heating rates, isothermal decay and numerical fitting method and a comparison was made between the results obtained. The average activation energy values determined by the methods used here were 0.72, 1.16 and 1.77 eV, with mean values for the frequency factor of 2.58*108, 2.89*1013 and 6.16*1016 s-1 for the first, third and fifth peaks respectively. The values of activation energy obtained for each peak using the different methods covered a spread of about 4%. However, the spread for each of the frequency factors was very high.