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CONSEQUENCES OF USING HOME-MADE RADON SOURCES FOR MEASURING THE RADON DIFFUSION COEFFICIENT
1Faculty of Civil Engineering, Czech Technical University, Thákurova 7, 166 29 Praha 6, Czech Republic.
Radiation Protection Dosimetry
|October 6, 2017
Summary
Home-made radon sources are generally unsuitable for measuring the radon diffusion coefficients of waterproofing materials due to low radon production rates. These limitations restrict their use to specific conditions and mathematical models.
Area of Science:
- Environmental Science
- Geochemistry
- Materials Science
Background:
- Radon diffusion in waterproofing materials is crucial for indoor air quality and radiation protection.
- Accurate measurement of radon diffusion coefficients requires reliable radon sources.
- Existing methods may face limitations in generating sufficient radon concentrations for certain material types.
Purpose of the Study:
- To evaluate the effectiveness of home-made radon sources for determining the radon diffusion coefficient of waterproofing materials.
- To identify the limitations and applicability of these sources in material characterization.
- To compare the performance of home-made sources against artificial sources.
Main Methods:
- Studied three high-radium content materials: uraninite, slag concrete, and filter sand.
- Utilized home-made radon sources for diffusion coefficient determination.
- Analyzed radon production rates and generated concentrations.
- Applied time-dependent mathematical solutions for non-stationary radon diffusion.
Main Results:
- Home-made radon sources exhibit significantly lower radon production rates than artificial sources.
- Generated radon concentrations typically do not exceed 100 kBq/m3.
- These sources are inadequate for determining radon diffusion coefficients below 1 × 10-12 m2/s.
- Only time-dependent models are suitable for data analysis with home-made sources.
Conclusions:
- Home-made radon sources have limited applicability for precise radon diffusion coefficient measurements, especially for low-diffusion materials.
- Their low radon output restricts their use to specific experimental setups and analytical methods.
- Further research may be needed to enhance home-made source performance or explore alternative methods for low-diffusion materials.
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