Evidence against solar influence on nuclear decay constants
| Autor: | Karsten Kossert, Denis E. Bergeron, M. Marouli, P. De Felice, S. Bourke, L. Verheyen, M.W. van Rooy, M.-N. Amiot, François Bochud, H. Stroh, Stefaan Pommé, Timotheos Altzitzoglou, Ryan P. Fitzgerald, Youcef Nedjadi, Frédéric Juget, R. Van Ammel, M. Bruggeman, T. W. Jackson, Raphael Galea, S Courte, J. Golya, K.M. Ferreira, Aldo Fazio, V. Chisté, Branko Vodenik, Michael P. Unterweger, John Keightley, B.R.S. Simpson, Claude Bailat, W.M. van Wyngaardt, J. Paepen, H. Schrader, Matjaž Korun, Ole Nähle, M. I. Reinhard, C Michotte, A. Ceccatelli, Leticia S. Pibida, J. Lubbe, T. Buchillier, T. Roy, M.J. van Staden, Sean Collins, Mikael Hult |
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| Přispěvatelé: | Bureau International des Poids et Mesures (BIPM), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Fazio, A., European Commission - Joint Research Centre [Geel] (JRC), Physikalisch-Technische Bundesanstalt [Braunschweig] (PTB), Institut de radiophysique (IRA), Radioactivity Standards Laboratory (NMISA), Laboratorio Tecnologie dei Materiali Faenza, ENEA, Agenzia Nazionale per le nuove Tecnologie, l’energia e lo sviluppo economico sostenibile = Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Australian Nuclear Science and Technology Organisation [Australie] (ANSTO), National Research Council of Canada (NRC), National Physical Laboratory [Teddington] (NPL), Environment Laboratories (IAEA), International Atomic Energy Agency [Vienna] (IAEA), National Institute of Standards and Technology [Gaithersburg] (NIST), Centre d'Etude de l'Energie Nucléaire (SCK-CEN), Jozef Stefan Institute [Ljubljana] (IJS), Laboratoire National Henri Becquerel (LNHB), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département d'instrumentation Numérique (DIN (CEA-LIST)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Electron capture Decay constant Astrophysics Neutrino Half-life Uncertainty Radioactivity Sun [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences 7. Clean energy alpha-rays Article 010309 optics Nuclear physics Becquerel 0103 physical sciences beta-rays Exponential decay Neutrinos 010306 general physics Physics lcsh:QC1-999 Exponential function Amplitude 13. Climate action ionizing radiation [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Radioactive decay lcsh:Physics |
| Zdroj: | Phys.Lett.B Phys.Lett.B, 2016, 761, pp.281-286. ⟨10.1016/j.physletb.2016.08.038⟩ Physics letters. [Part B] Physics Letters B, vol. 761, pp. 281-286 Physics Letters B, Vol 761, Iss C, Pp 281-286 (2016) Physics Letters B |
| DOI: | 10.1016/j.physletb.2016.08.038⟩ |
| Popis: | International audience; The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements of mono-radionuclide sources were performed over periods from 200 days up to four decades at 14 laboratories across the globe. Residuals from the exponential nuclear decay curves were inspected for annual oscillations. Systematic deviations from a purely exponential decay curve differ from one data set to another and are attributable to instabilities in the instrumentation and measurement conditions. The most stable activity measurements of alpha, beta-minus, electron capture, and beta-plus decaying sources set an upper limit of 0.0006% to 0.008% to the amplitude of annual oscillations in the decay rate. Oscillations in phase with Earth's orbital distance to the Sun could not be observed within a 10−6 to 10−5 range of precision. There are also no apparent modulations over periods of weeks or months. Consequently, there is no indication of a natural impediment against sub-permille accuracy in half-life determinations, renormalisation of activity to a distant reference date, application of nuclear dating for archaeology, geo- and cosmochronology, nor in establishing the SI unit becquerel and seeking international equivalence of activity standards. |
| Databáze: | OpenAIRE |
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