A method for kinetic analysis and study of thermal quenching in thermoluminescence based on use of the area under an isothermal decay-curve

A method for kinetic analysis based on the use of the temperature-dependence of the area under an isothermal decay-curve is reported. The technique is not limited to use of areas corresponding to two measurement temperatures. The method is best suited to calculation of the activation energy in the case of first-order kinetics, and suitable limiting cases of general-order kinetics, and has been demonstrated using measurements made on quartz. In addition, the dependence of the area on the measurement temperature can be used to study thermal quenching. This has been illustrated using isothermal decay curves obtained from quartz and α-Al2O3:C. A key advantage of the method is that it can apply in cases which cannot easily be described by the Mott-Seitz model. Various results found using the method compare favourably with values obtained from conventional methods of kinetic analysis; from the literature, and are consistent with contemporary theory of stimulated luminescence. - Highlights: • A new technique for kinetic analysis and study of thermal quenching is reported. • The method uses the temperature-dependence of an isothermal decay-curve area. • The method has been successfully applied on quartz and α-Al2O3:C