Calibration of CR-39-based thoron progeny device

Area of Science:

• Environmental Science
• Radiological Health
• Occupational Health

Background:

• Radon isotopes, particularly thoron, and their progenies are implicated in respiratory tumor development.
• Thoron's presence is increasingly recognized in European residential and occupational settings.
• Existing thoron progeny measurement techniques, especially track detector methods, require further calibration.

Purpose of the Study:

• To calibrate track detector measurement methods for thoron progenies.
• To evaluate different devices and techniques for thoron progeny assessment.
• To determine calibration factors, measurement uncertainty, and reproducibility.

Main Methods:

• Utilized a calibration chamber for precise measurements.
• Employed track detector measurement technologies.
• Tested devices including Pylon AB5, WLx, and Sarad EQF 3220 capable of measuring multiple progenies.

Main Results:

• Determined calibration factor values for thoron progeny monitors.
• Assessed measurement uncertainty and reproducibility of the methods.
• Established a calibrated track detector measurement approach.

Conclusions:

• The study provides a calibrated method for measuring thoron progenies.
• Accurate measurement is crucial for assessing radiological risks in indoor environments.
• Future research will investigate parameters like aerosol distribution's impact.