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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

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Heating Rate Optimization for Enhanced Precision in Thermoluminescent Dosimetry.

Jordan D Noey¹, Joseph S Kopke, Kimberlee J Kearfott

¹Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, Ann Arbor, Michigan, 48109-2104.

|August 12, 2025

Summary

Optimizing heating rates for thermoluminescent dosimeters (TLDs) improves measurement precision. An optimal rate of 4 °C s⁻1 minimizes noise and thermal quenching effects, enhancing reliability across TLD materials.

Keywords:

analysis, statistical dose, external dosimetry, thermoluminescent instrumentation

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Published on: December 14, 2017

Area of Science:

Physics
Materials Science
Radiation Detection

Background:

Thermoluminescent dosimeters (TLDs) are crucial for radiation measurement.
Heating rate significantly impacts TLD precision by influencing signal noise and thermal quenching.

Purpose of the Study:

To determine the optimal heating rate for TLDs to maximize precision.
To investigate the effects of heating rates on integrated peak counts and kinetic parameters.

Main Methods:

Evaluated heating rates from 1 °C s⁻1 to 20 °C s⁻1.
Performed peak deconvolution and used the variable heating rate method for kinetic analysis.
Constructed time-temperature profiles with linear heating ramps.

Main Results:

An optimal heating rate of 4 °C s⁻1 was identified for minimizing variance in integrated peak counts.
Peak temperature and intensity showed exponential dependence on heating rate.
Kinetic parameters from deconvolution and variable heating rate methods showed consistency.

Conclusions:

Heating rate optimization is critical for reliable TLD measurements.
Both signal noise and thermal quenching effects impact precision, with quenching more significant at higher rates.
Dosimeter material and glow curve complexity also influence measurement accuracy.