Computerized glow curve deconvolution (CGCD): A comparison using asymptotic vs rational approximation in...

Area of Science:

• Physics
• Materials Science
• Radiation Detection

Background:

• Thermoluminescence (TL) analysis is crucial for radiation dosimetry.
• Accurate deconvolution of TL glow curves is essential for determining dosimetric parameters.
• Existing tools may have limitations in handling complex trap distributions.

Purpose of the Study:

• To develop an open-source tool, GCD Analyzer, for accurate Computerized Glow Curve Deconvolution (CGCD) of thermoluminescence (TL) glow peaks.
• To enhance TL analysis by incorporating a more accurate rational approximation.
• To provide a versatile tool for both routine and emergency radiation dosimetry.

Main Methods:

• Development of GCD Analyzer based on Microsoft Excel.
• Utilizing a rational approximation for improved accuracy in deconvolution.
• Implementing analysis for discrete, continuous, and combined trap distributions.
• Incorporating various kinetic models (FOK, SOK, GOK, MOK, CTD) and background subtraction.

Main Results:

• GCD Analyzer demonstrates capability in deconvoluting glow curves with discrete or continuous trap distributions.
• The tool effectively combines discrete and continuous energy distributions for diverse material types.
• High accuracy achieved, with Figure of Merit (F.O.M) up to 0.0005% for synthetic curves and 0.9781% for experimental CTD curves.
• Performance comparable to leading methods in inter-comparison projects.

Conclusions:

• GCD Analyzer is a robust and accurate open-source tool for TL glow curve deconvolution.
• The tool's unique features enable comprehensive analysis of crystalline, amorphous, and mixed materials.
• It offers a valuable resource for radiation dosimetry, enhancing precision and applicability.