Numerical analysis of simultaneous TL/TSC measurements

Area of Science:

• Solid State Physics
• Materials Science
• Luminescence and Conductivity Phenomena

Background:

• Thermoluminescence (TL) and thermally stimulated conductivity (TSC) are related phenomena offering insights into material trapping processes.
• Simultaneous detection of both phenomena provides a more comprehensive understanding than individual measurements.

Purpose of the Study:

• To derive a new formula for simultaneous TL/TSC measurements under quasiequilibrium conditions.
• To simplify the numerical analysis of experimental TL/TSC data by reducing the number of fitting parameters.
• To validate the new analysis method and demonstrate its practical application.

Main Methods:

• Derivation of a new formula for simultaneous TL/TSC measurements under quasiequilibrium (QE) conditions.
• Numerical analysis of experimental data requiring fitting of only two unknown parameters.
• Verification of the method using computer-generated TL/TSC curves and application to alpha-alumina single crystals.

Main Results:

• A new, simplified formula for simultaneous TL/TSC analysis was derived and validated.
• The method was successfully applied to alpha-alumina single crystals.
• Analysis confirmed previous findings for peak B' but indicated complexities for peak D' requiring further investigation.

Conclusions:

• The new formula offers a simplified approach to analyzing simultaneous TL/TSC data.
• The method is practical for studying trapping processes in materials like alpha-alumina.
• Further research is needed to elucidate the complex factors influencing peak D' in alpha-alumina.