A NEW METHOD FOR OBTAINING THE TRAP PARAMETERS OF COMPLEX THERMOLUMINESCENCE GLOW PEAKS

A new method is described to obtain the trap parameters of thermolumin escence (TL) glow curves including several peaks. The method starts wi th obtaining the trap parameters of the higher temperature glow peak. The evaluation of the trap parameters of this peak starts with determi ning the order of kinetics b. Two different equations are developed to estimate b. Thereafter, the activation energy E (eV) and then the fre quency factor S (s(-1)) or the pre-exponential factor S '' (s(-1)) of this peak are determined. The shape of this peak is then fitted to an equation of the order of kinetics depending on the determined value of b. Using the previously determined shape, the higher temperature peak is scaled up to fit the decreasing portion of the combined peak. The procedure is then repeated to account for each of the remaining peaks in the glow curve.