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Radon emanation measurements using silicon photodiode detectors
J L Gutiérrez1, M García-Talavera, V Peña
1Laboratorio LIBRA, Edificio I+D, Campus Miguel Delibes, Universidad de Valladolid, Valladolid 47011, Spain. joselg@libra.uva.es
Summary
This study introduces a novel pin photodiode system for measuring radon-222 (222Rn) emanation from porous materials. The cost-effective system accurately quanties radon release under various environmental conditions.
Area of Science:
- Environmental Science
- Nuclear Physics
- Sensor Technology
Background:
- Radon (222Rn) poses significant global health hazards.
- Existing radon measurement methods vary in complexity and cost.
- Pin silicon photodiodes offer high alpha particle detection efficiency and affordability.
Purpose of the Study:
- To develop and validate a system for determining the radon-222 emanation factor from porous materials.
- To create a versatile tool for both field and laboratory radon measurements.
- To integrate environmental sensors for comprehensive emanation monitoring.
Main Methods:
- Utilized a pin silicon photodiode-based system for radon detection.
- Incorporated temperature, humidity, and pressure sensors to monitor environmental conditions.
- Applied gamma-ray spectrometry to pre-determine 226Ra content in samples.
Main Results:
- Successfully demonstrated a system for measuring radon emanation factor.
- Validated the system's capability in field and laboratory settings.
- Presented case studies showcasing system performance with varying 226Ra content.
Conclusions:
- The pin photodiode system provides a reliable and cost-effective method for assessing radon-222 emanation.
- The integrated environmental sensors enhance the system's utility for diverse measurement scenarios.
- This technology contributes to better understanding and mitigation of radon hazards.