Errors in the Activation Energy and Thermal Quenching Parameters When Evaluated from Quenched Thermoluminescence Glow Peaks Using the Various Heating Rates Method
Abstract:It is generally observed that the various heating rates (VHR) method overestimates the activation energy (E) when applied to quenched thermoluminescence (TL) peaks. Based on the analysis of numerically computed quenched TL peaks, we introduced an empirical expression that estimates the error in E. The expression correlates the error in E with the width of the peak, the luminescence efficiency, and its first derivative at the lowest heating rate evaluated at the temperature of peak maximum. In addition, the exp… Show more
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