New computer procedure for routine EPR-dosimetry on tooth enamel: description and verification

Area of Science:

• Geochronology
• Dosimetry
• Spectroscopy

Background:

• Electron paramagnetic resonance (EPR) spectroscopy is a valuable tool for dating geological and archaeological samples.
• Accurate dose reconstruction from tooth enamel is crucial for retrospective dosimetry and archaeological dating.
• Existing methods for EPR spectral analysis can be time-consuming and require specialized expertise.

Purpose of the Study:

• To develop and validate a user-friendly software code for fitting electron paramagnetic resonance (EPR) tooth enamel spectra.
• To expedite the process of EPR dose reconstruction for routine applications.
• To compare the performance of the new software with an independent signal evaluation method.

Main Methods:

• Development of a software code utilizing linear combinations of Gaussian functions to fit EPR tooth enamel spectra.
• Application of the developed software for dose reconstruction.
• Independent verification using the selective saturation method for signal evaluation.
• Comparative analysis of dose reconstruction results from both methods on 13 teeth samples.

Main Results:

• The developed software code effectively fits EPR tooth enamel spectra using Gaussian functions.
• The software significantly fastens the EPR dose reconstruction process for routine applications.
• Excellent agreement was observed between the doses evaluated by the new software and the selective saturation method.
• The findings confirm the reliability and accuracy of the developed software for EPR dose reconstruction.

Conclusions:

• The new software code provides a reliable and efficient tool for EPR dose reconstruction from tooth enamel.
• The software's performance is validated by its excellent agreement with the selective saturation method.
• This advancement facilitates routine applications in geochronology and retrospective dosimetry.