Study of particular problems appearing in NORM samples and recommendations for best practice gamma-ray spectrometry

In this paper spectral interference effects for selected gamma-emitting radionuclides of the natural decay series and 40K in selected NORM samples are studied. Recommendations for the choice of γ-lines and the consideration of possible spectral interferences are provided. Special attention is given...

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Bibliographic Details
Published in:Applied radiation and isotopes 2017-08, Vol.126, p.285-288
Main Authors: Baumgartner, Andreas, Stietka, Michael, Kabrt, Franz, Wiedner, Hannah, Maringer, Franz Josef
Format: Article
Language:English
Subjects:
Gamma-ray spectrometry
NORM
Radon tightness
Spectral interference
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Summary:In this paper spectral interference effects for selected gamma-emitting radionuclides of the natural decay series and 40K in selected NORM samples are studied. Recommendations for the choice of γ-lines and the consideration of possible spectral interferences are provided. Special attention is given to the radon tightness of the sample containers. A simple and sensitive method for the estimation of the 222Rn leakage of sample containers is introduced. The applied polystyrene sample containers show 222Rn leakages lower than 1%. •Comprehensive study of spectral interferences of selected natural radionuclides.•Calculation of interference contributions for various NORM samples.•Comparison of BIPM and IAEA gamma emission intensities for selected natural radionuclides.•Demonstration of a simple and sensitive method for the estimation of the 222Rn leakage of sample containers.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2016.12.035