Detection of rain events in radiological early warning networks with spectro-dosimetric systems

Short-term pronounced increases of the ambient dose equivalent rate, due to rainfall are a well-known phenomenon. Increases in the same order of magnitude or even below may also be caused by a nuclear or radiological event, i.e. by artificial radiation. Hence, it is important to be able to identify...

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Bibliographic Details
Published in:Journal of instrumentation 2017-10, Vol.12 (10), p.P10005-P10005
Main Authors: Dąbrowski, R., Dombrowski, H., Kessler, P., Röttger, A., Neumaier, S.
Format: Article
Language:English
Subjects:
Dosage
Early warning systems
Measurement methods
Rain
Rainfall
Scintillation counters
Spectrometry
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Summary:Short-term pronounced increases of the ambient dose equivalent rate, due to rainfall are a well-known phenomenon. Increases in the same order of magnitude or even below may also be caused by a nuclear or radiological event, i.e. by artificial radiation. Hence, it is important to be able to identify natural rain events in dosimetric early warning networks and to distinguish them from radiological events. Novel spectrometric systems based on scintillators may be used to differentiate between the two scenarios, because the measured gamma spectra provide significant nuclide-specific information. This paper describes three simple, automatic methods to check whether an *(10) increase is caused by a rain event or by artificial radiation. These methods were applied to measurements of three spectrometric systems based on CeBr3, LaBr3 and SrI2 scintillation crystals, investigated and tested for their practicability at a free-field reference site of PTB.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/12/10/P10005