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dc.contributor.authorPOMME STEFAANen_GB
dc.contributor.authorSTROH HEIKOen_GB
dc.contributor.authorPAEPEN JANen_GB
dc.contributor.authorVAN AMMEL RAFen_GB
dc.contributor.authorMAROULI MARIAen_GB
dc.contributor.authorALTZITZOGLOU TIMOTHEOSen_GB
dc.contributor.authorHULT MIKAELen_GB
dc.contributor.authorKOSSERT K.en_GB
dc.contributor.authorNÄHLE O.en_GB
dc.contributor.authorSCHRADER H.en_GB
dc.contributor.authorJUGET F.en_GB
dc.contributor.authorBAILAT C.en_GB
dc.contributor.authorNEDJADI Y.en_GB
dc.contributor.authorBOCHUD F.en_GB
dc.contributor.authorBUCHILLIER T.en_GB
dc.contributor.authorMICHOTTE C.en_GB
dc.contributor.authorCOURTE Sen_GB
dc.contributor.authorVAN ROOY M. W.en_GB
dc.contributor.authorVAN STADEN M. J.en_GB
dc.contributor.authorLUBBE J.en_GB
dc.contributor.authorSIMPSON B. R. S.en_GB
dc.contributor.authorFAZIO A.en_GB
dc.contributor.authorDE FELICE P.en_GB
dc.contributor.authorJACKSON T. W.en_GB
dc.contributor.authorVAN WYNGAARDT W. M.en_GB
dc.contributor.authorREINHARD M. I.en_GB
dc.contributor.authorGOLYA J.en_GB
dc.contributor.authorBOURKE S.en_GB
dc.contributor.authorROY T.en_GB
dc.contributor.authorGALEA R.en_GB
dc.contributor.authorKEIGHTLEY J. D.en_GB
dc.contributor.authorFERREIRA K. M.en_GB
dc.contributor.authorCOLLINS S. M.en_GB
dc.contributor.authorCECCATELLI A.en_GB
dc.contributor.authorVERHEYEN L.en_GB
dc.contributor.authorBRUGGEMAN M.en_GB
dc.contributor.authorVODENIK BRANKOen_GB
dc.contributor.authorKORUN M.en_GB
dc.contributor.authorCHISTE V.en_GB
dc.contributor.authorAMIOT M.-N.en_GB
dc.date.accessioned2019-05-01T00:04:28Z-
dc.date.available2017-08-31en_GB
dc.date.available2019-05-01T00:04:28Z-
dc.date.created2017-08-31en_GB
dc.date.issued2017en_GB
dc.date.submitted2016-09-28en_GB
dc.identifier.citationMETROLOGIA vol. 54 no. 1 p. 1en_GB
dc.identifier.issn0026-1394en_GB
dc.identifier.urihttps://iopscience.iop.org/article/10.1088/1681-7575/54/1/1/metaen_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC103198-
dc.description.abstractClaims that proximity to the Sun causes variation of decay constants at permille level have been investigated for alpha decaying nuclides. Repeated decay rate measurements of 209Po, 226Ra, 228Th, 230U, and 241Am sources were performed over periods of 200 days up to two decades at various nuclear metrology institutes around the globe. Residuals from the exponential decay curves were inspected for annual oscillations. Systematic deviations from a purely exponential decay curve differ in amplitude and phase from one data set to another and appear attributable to instabilities in the instrumentation and measurement conditions. The most stable activity measurements of alpha decaying sources set an upper limit between 0.0006% and 0.006% to the amplitude of annual oscillations in the decay rate. There are no apparent indications for systematic oscillations at a level of weeks or months. Oscillations in phase with Earth's orbital distance to the sun could not be observed within 10-5-10-6 range precision.en_GB
dc.description.sponsorshipJRC.G.2-Standards for Nuclear Safety, Security and Safeguardsen_GB
dc.format.mediumOnlineen_GB
dc.languageENGen_GB
dc.publisherIOP PUBLISHING LTDen_GB
dc.relation.ispartofseriesJRC103198en_GB
dc.titleOn decay constants and orbital distance to the Sun – Part I: Alpha decayen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1088/1681-7575/54/1/1en_GB
JRC Directorate:Nuclear Safety and Security

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