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Published on: August 2, 2021
Analysis of trap parameters associated with intermediate luminescence peaks of quartz
S Mammadov1, M Gurbanov1, A Abishov1
1Institute of Radiation Problems, Ministry of Science and Education, Azerbaijan, 9, B. Vahabzade str, Baku, 1143, Azerbaijan.
Abstract:
This research focuses on the thermoluminescence parameters associated with intermediate luminescence peaks in quartz. By employing isothermal decay analysis, TL difference curves, and the initial rise method, we aim to identify and characterize the trap structures contributing to the TL signal. The results indicate that the TL glow peaks do not conform strictly to first- or second-order kinetics, suggesting a more complex trapping and recombination mechanism. Analysis of TL difference curves with different Tstop temperatures, obtained by digitally subtracting the residual TL signal, facilitates the identification of three stable Tm stability regions at 145 °C, 170 °C, and 235 °C. The glow curve obtained following isothermal cleaning at ten different temperatures, ranging from 90 °C to 170 °C, was analyzed to calculate the activation energy using the initial-rise method. The results indicate that the apparent activation energy decreases as the segments of the glow curve are cleaned at increasing Tstop temperature. The findings contribute to a more accurate understanding of TL kinetics in quartz, with implications for dosimetric applications.
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