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dc.contributor.authorTHIAM C.en_GB
dc.contributor.authorBOBIN C.en_GB
dc.contributor.authorMARINGER F.-J.en_GB
dc.contributor.authorPEYRES Virginiaen_GB
dc.contributor.authorPOMME Stefaanen_GB
dc.date.accessioned2015-12-23T02:14:12Z-
dc.date.available2015-06-01en_GB
dc.date.available2015-12-23T02:14:12Z-
dc.date.created2015-05-26en_GB
dc.date.issued2015en_GB
dc.date.submitted2014-09-11en_GB
dc.identifier.citationMETROLOGIA vol. 52 p. S97 - S107en_GB
dc.identifier.issn0026-1394en_GB
dc.identifier.urihttp://iopscience.iop.org/0026-1394/52/3/S97/article?fromSearchPage=trueen_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC91535-
dc.description.abstractThe 4pig-counting technique is recognized as a powerful primary method for the standardization of radionuclides decaying with abundant gamma emissions. Based on the use of a gamma detector in quasi 4pi-geometry, a detection efficiency close to 100% and a low uncertainty can be achieved thanks to the summing effect of subsequent gamma transitions. Uncertainties have to be assigned to the realistic modelling of the source-detector geometry with respect to dimensions, density and material composition, the calculation of the total counting efficiency of the detector for the various emitted radiation and the effect of possible flaws in the decay scheme of a radionuclide on the calculated total efficiency. Other uncertainty factors pertain to typical metrological sources of uncertainty, such as weighing, nuclear counting with pulse pile-up and system dead-time effects, impurity corrections, decay corrections, timing and frequency, etc. In order to ensure good metrological practices at NMIs, the uncertainties particular to the method are discussed.en_GB
dc.description.sponsorshipJRC.D.4-Standards for Nuclear Safety, Security and Safeguardsen_GB
dc.format.mediumPrinteden_GB
dc.languageENGen_GB
dc.publisherIOP PUBLISHING LTDen_GB
dc.relation.ispartofseriesJRC91535en_GB
dc.titleAssessment of the uncertainty budget associated with 4pi-gamma countingen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1088/0026-1394/52/3/S97en_GB
JRC Directorate:Health, Consumers and Reference Materials

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