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Simulation of the influence of thermal quenching on thermoluminescence glow‐peaks
Author(s) -
Subedi B.,
Kitis G.,
Pagonis V.
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925588
Subject(s) - thermoluminescence , quenching (fluorescence) , luminescence , kinetic energy , thermal , materials science , analytical chemistry (journal) , atomic physics , chemistry , optics , fluorescence , optoelectronics , thermodynamics , physics , chromatography , quantum mechanics
The thermal quenching of luminescence efficiency is an effect which is present in many thermoluminescent (TL) materials. It causes a significant decrease of the luminescence signal and disturbs the shape of the glow‐peaks. Therefore, in principle, the thermoluminescence kinetics theory cannot describe TL glow‐peaks influenced by thermal quenching. In the present work a detailed simulation of the influence of the thermal quenching effect on thermoluminescence glow‐peaks is presented. Specifically we study the shift of the quenched glow‐peak with heating rate and the effect on the various heating rate methods, the influence on the symmetry factor and the kinetic order of the glow‐peak, and the effect of thermal quenching on the initial rise and peak shape methods for evaluating kinetic parameters. Furthermore, the evaluation of the thermal quenching parameters using the quenched glow‐peak and the possibility of using the conventional expression describing a single glow‐peak to fit the quenched glow peaks are also investigated.