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Application of a Monte Carlo method to the uncertainty assessment in in situ gamma-ray spectrometry
Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics. Swedish Defence Research Agency, FOI CBRN Defence and Security, SE-901 82 Umeå, Sweden.ORCID iD: 0000-0003-0504-6844
2018 (English)In: Journal of Environmental Radioactivity, ISSN 0265-931X, E-ISSN 1879-1700, Vol. 187, p. 1-7Article in journal (Refereed) Published
Abstract [en]

In situ gamma-ray spectrometry has since the introduction of portable germanium detectors been a widely used method for the assessment of radionuclide ground deposition activity levels. It is, however, a method that is most often associated with fairly large and, more important, poorly known combined measurement uncertainties. In this work an uncertainty analysis of in situ gamma ray spectrometry in accordance with the Guide to the Expression of Uncertainty in Measurements is presented. The uncertainty analysis takes into account uncertainty contributions from the calibration of the detector system, the assumed activity distribution in soil, soil density, detector height and air density. As a result, measurement results from in situ gamma spectrometry will serve as a better basis for decision-making in e.g. radiological emergencies.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 187, p. 1-7
Keywords [en]
HPGe, In situ gamma ray spectrometry, Radioactive fallout, Monte Carlo method, Uncertainty
National Category
Environmental Sciences related to Agriculture and Land-use Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:umu:diva-148623DOI: 10.1016/j.jenvrad.2018.02.003ISI: 000428833900001PubMedID: 29459254OAI: oai:DiVA.org:umu-148623DiVA, id: diva2:1224063
Available from: 2018-06-26 Created: 2018-06-26 Last updated: 2018-06-26Bibliographically approved

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Persson, Leif

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