Characterization of the thermoluminescence glow curve of Li2B4O7:Cu,Ag

Use of Terbium Doped Phosphate Glasses for High Dose Radiation Dosimetry—Thermoluminescence Characteristics, Dose Response and Optimization of Readout Method

“…where I TL and I Peak (1-5) are total and fractional TL intensities due to the particular peaks contributions. Such a combined approach to TL glow curve analysis has already been applied and reported in literature [49]. The glow peaks following first (FOK) and general order kinetics (GOK) were fitted using Equations ( 5) and ( 6) [48,50]:…”

“…where I and I m are TL intensities for a given temperature (T, in K) or at peak maximum (Tm) and temperature linearly increases with time (t) from T 0 to T, T(t) = T 0 + βt, β ( • C/s) is the linear heating rate; E (eV) is the trap activation energy; k (eV•K −1 ) is the Boltzmann constant; and b is the kinetic order parameter. In case of continuous energy distribution of traps present in material, usually exponential or gaussian functions are used, which can be described by Equations ( 7) and ( 8) [49][50][51]:…”

“…Based on these distributions, two models are generally in use, describing dependencies of TL emission intensity vs. energy and temperature according to Equations ( 9) and ( 10): (10) where s (s −1 ) is the frequency coefficient related to the type of defect and other symbols are as described above. The models described according to Equations ( 5)-( 10) are implemented in a dedicated glow curve deconvolution software and are described in several papers [49,50]. The software was used for analysis of glow curves obtained during measurement of PPG sample, and graphical representation of the obtained results are presented in Figure 10.…”

“…Nevertheless, the careful analysis of the available data allowed for determination of the positions of the peaks in TL emission curves for which temperature shifts were monitored in relation to the applied heating rate. Analysis was performed according to the known VHR based correlation of the TL peak position and heating rate, which can be described by Equation (11) [49]: (11) where all symbols are as described previously. Equation ( 11) can be easily linearized, and the obtained dependencies of ln T 2 m /β = f(1/T) for PPG glass samples are presented in Figure 11.…”

Photoluminescence and thermoluminescence dosimetry properties of Ag/Y co‐doped ZnO nanophosphor for radiation measurements

“…This method is now frequently employed in radiation dosimetry and is also used to assess the TL kinetic parameters for a specific peak in the glow curve. Numerous models, approximations, and minimizing techniques have been researched, and multiple computer applications have also been developed for TL glow-curve analysis [16,17]. In the case of complex glow curves, we are unable to determine the kinetic parameters using the computerized glow curve deconvolution (CGCD) technique alone.…”