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Reference instruments based on spectrometric measurement with Lucas Cells.
G Butterweck1, V Schmidt2, H Buchröder2
1Paul Scherrer Institut, Villigen, Switzerland gernot.butterweck@psi.ch.
Radiation Protection Dosimetry
|May 8, 2015
Summary
Accredited laboratories in Germany and Switzerland enhance radon gas calibration using Lucas Cells and spectrometric analysis. This improves measurement accuracy by compensating for instrumentation fluctuations.
Area of Science:
- Environmental Science
- Metrology
- Radiation Detection
Background:
- Bundesamt für Strahlenschutz and Paul Scherrer Institute are accredited calibration laboratories for radon gas.
- Lucas Cells are used in reference instrumentation due to low environmental dependence.
- Improving the quality of reference radon activity concentration is crucial.
Purpose of the Study:
- To describe the reference instrumentation and calibration procedures at two accredited laboratories.
- To introduce a spectrometric method for enhanced data evaluation in radon measurements.
- To ensure traceability and present performance test data.
Main Methods:
- Utilizing Lucas Cells as detectors in reference instrumentation.
- Applying spectrometric data evaluation with pulse height analysis.
- Retrospectively analyzing pulse height spectra to correct for instrumentation variations.
Main Results:
- Detailed description of reference instrumentation and spectrum evaluation procedures.
- Demonstration of methods for achieving traceability to primary calibration laboratories.
- Presentation of performance test data validating the improved methodology.
Conclusions:
- The combined use of Lucas Cells and spectrometric analysis enhances the accuracy of radon gas activity concentration measurements.
- The described methods ensure high-quality calibration and traceability for radon measurements.
- Spectrometric evaluation offers a robust approach to compensate for instrumental drift in reference measurements.
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