On decay constants and orbital distance to the Sun—part I: alpha decay

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dc.contributor.authorPommé, Sen_AU
dc.contributor.authorStroh, Hen_AU
dc.contributor.authorPaepen, Jen_AU
dc.contributor.authorVan Ammel, Ren_AU
dc.contributor.authorMarouli, Men_AU
dc.contributor.authorAltzitzoglou, Aen_AU
dc.contributor.authorHult, Men_AU
dc.contributor.authorKossert, Ken_AU
dc.contributor.authorNähle, Oen_AU
dc.contributor.authorSchrader, Hen_AU
dc.contributor.authorJuget, Fen_AU
dc.contributor.authorBailat, Cen_AU
dc.contributor.authorNedjadi, Yen_AU
dc.contributor.authorBochud, Fen_AU
dc.contributor.authorBuchillier, Ten_AU
dc.contributor.authorMichotte, Men_AU
dc.contributor.authorCourte, Sen_AU
dc.contributor.authorvan Rooy, MWen_AU
dc.contributor.authorvan Staden, MJen_AU
dc.contributor.authorLubbe, Len_AU
dc.contributor.authorSimpson, BRSen_AU
dc.contributor.authorFazio, Aen_AU
dc.contributor.authorDe Felice, Den_AU
dc.contributor.authorJackson, TWen_AU
dc.contributor.authorvan Wyngaardt, WMen_AU
dc.contributor.authorReinhard, MIen_AU
dc.contributor.authorGolya, Jen_AU
dc.contributor.authorBourke, Sen_AU
dc.contributor.authorRoy, Ten_AU
dc.contributor.authorGalea, Ren_AU
dc.contributor.authorKeightley, JDen_AU
dc.contributor.authorFerreira, KMen_AU
dc.contributor.authorCollins, SMen_AU
dc.contributor.authorCeccatelli, Aen_AU
dc.contributor.authorVerheyen, Len_AU
dc.contributor.authorBruggeman, Men_AU
dc.contributor.authorVodenik, Men_AU
dc.contributor.authorKorun, Men_AU
dc.contributor.authorChisté, Ven_AU
dc.contributor.authorAmiot, MNen_AU
dc.date.accessioned2021-11-16T04:02:31Zen_AU
dc.date.available2021-11-16T04:02:31Zen_AU
dc.date.issued2016-11-28en_AU
dc.date.statistics2021-11-12en_AU
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 d 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 α 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. © The Authors CC BY 3.0 licenceen_AU
dc.identifier.citationPommé, S., Stroh, H., Paepen, J., Van Ammel, R., Marouli, M., Altzitzoglou, T., Hult, M., Kossert, K., Nähle, O., Schrader, H., Juget, F., Bailat, C., Nedjadi, Y., Bochud, F., Buchillier, T., Michotte, C., Courte, S., van Rooy, M. W., van Staden, M. J., Lubbe, J., Simpson, B. R. S., Fazio, A., De Felice, P., Jackson, T. W., Van Wyngaardt, W. M., Reinhard, M. I., Golya, J., Bourke, S., Roy, T., Galea, R., Keightley, J. D., Ferreira, K. M., Collins, S. M., Ceccatelli, A., Verheyen, L., Bruggeman, M., Vodenik, B., Korun, M., Chisté, V., & Amiot, M.-N. (2016). On decay constants and orbital distance to the Sun—part I: alpha decay. Metrologia, 54(1), 1-18. doi:10.1088/1681-7575/54/1/1en_AU
dc.identifier.issn1681-7575en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleMetrologiaen_AU
dc.identifier.pagination1-18en_AU
dc.identifier.urihttps://iopscience.iop.org/article/10.1088/1681-7575/54/1/1en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12259en_AU
dc.identifier.volume54en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectDecayen_AU
dc.subjectSunen_AU
dc.subjectAlpha decayen_AU
dc.subjectIsotopesen_AU
dc.subjectRadionuclide metrologyen_AU
dc.subjectMetrologyen_AU
dc.subjectOscillationsen_AU
dc.subjectEarth planeten_AU
dc.subjectDistanceen_AU
dc.titleOn decay constants and orbital distance to the Sun—part I: alpha decayen_AU
dc.typeJournal Articleen_AU
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