Kinetics of the TL phenomenon in LiF:Mg irradiated to different dose of gamma radiation of 60Co using two different programs of deconvolution

In this work, the results on determination of kinetic parameters using the method of deconvolution of glow curves obtained from the LiF doped with Mg2+ ions, after having been irradiated to 5, 10 and 25 Gy of 60Co gamma radiation, corresponding to the range of TL-vs-dose response linearity, are presented. The deconvolution is performed using two functions obtained by the method of asymptotic series and by the method based on the approximation of continued fractions. The glow curve of the studied material shows a dosimetric glow peak at 518 K and three peaks of very low intensity at 383, 423 and 463 K, all of a general-order kinetics. Kinetic parameters obtained with both methods showed that the values of kinetics, b, the energy of the traps, E, and the factor of frequency, s, do not differ significantly. However, the figure of merit, FOM, and the second derivative criteria indicate that the accuracy of the calculations with the second method improves considerably.