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Masson, O.* ; Steinhauser, G.* ; Zok, D.* ; Saunier, O.* ; Angelov, H.* ; Babić, D.* ; Bečková, V.* ; Bieringer, J.* ; Bruggeman, M.* ; Burbidge, C.I.* ; Conil, S.* ; Dalheimer, A.* ; de Geer, L.E.* ; de Vismes Ott, A.* ; Eleftheriadis, K.* ; Estier, S.* ; Fischer, H.* ; Garavaglia, M.G.* ; Gasco Leonarte, C.* ; Gorzkiewicz, K.* ; Hainz, D.* ; Hoffman, I.* ; Hýža, M.* ; Isajenko, K.* ; Karhunen, T.* ; Kastlander, J.* ; Katzlberger, C.* ; Kierepko, R.* ; Knetsch, G.J.* ; Kövendiné Kónyi, J.* ; Lecomte, M.* ; Mietelski, J.W.* ; Min, P.* ; Møller, B.* ; Nielsen, S.P.* ; Nikolic, J.* ; Nikolovska, L.* ; Penev, I.* ; Petrinec, B.* ; Povinec, P.P.* ; Querfeld, R.* ; Raimondi, O.* ; Ransby, D.* ; Ringer, W.* ; Romanenko, O.* ; Rusconi, R.* ; Saey, P.R.J.* ; Samsonov, V.* ; Šilobritienė, B.* ; Simion, E.* ; Söderström, C.* ; Šoštarić, M.* ; Steinkopff, T.* ; Steinmann, P.* ; Sýkora, I.* ; Tabachnyi, L.* ; Todorovic, D.* ; Tomankiewicz, E.* ; Tschiersch, J. ; Tsibranski, R.* ; Tzortzis, M.* ; Ungar, K.* ; Vidic, A.* ; Weller, A.* ; Wershofen, H.* ; Zagyvai, P.* ; Zalewska, T.* ; Zapata García, D.* ; Zorko, B.*

Airborne concentrations and chemical considerations of radioactive ruthenium from an undeclared major nuclear release in 2017.

Proc. Natl. Acad. Sci. U.S.A. 116, 16750-16759 (2019)

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In October 2017, most European countries reported unique atmospheric detections of aerosol-bound radioruthenium (Ru-106). The range of concentrations varied from some tenths of mu Bq.m(-3) to more than 150 mBq.m(-3). The widespread detection at such considerable (yet innocuous) levels suggested a considerable release. To compare activity reports of airborne Ru-106 with different sampling periods, concentrations were reconstructed based on the most probable plume presence duration at each location. Based on airborne concentration spreading and chemical considerations, it is possible to assume that the release occurred in the Southern Urals region (Russian Federation). The Ru-106 age was estimated to be about 2 years. It exhibited highly soluble and less soluble fractions in aqueous media, high radiopurity (lack of concomitant radionuclides), and volatility between 700 and 1,000 degrees C, thus suggesting a release at an advanced stage in the reprocessing of nuclear fuel. The amount and isotopic characteristics of the radioruthenium release may indicate a context with the production of a large Ce-144 source for a neutrino experiment.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Environmental Radioactivity ; Ruthenium ; Nuclear Forensics ; Environmental Release ; Accidental Release; Radionuclides; Chernobyl; Ru-106; Ce-144

ISSN (print) / ISBN 0027-8424

e-ISSN 1091-6490

Journal Proceedings of the National Academy of Sciences of the United States of America

Quellenangaben Volume: 116, Issue: 34, Pages: 16750-16759

Publisher National Academy of Sciences

Publishing Place 2101 Constitution Ave Nw, Washington, Dc 20418 Usa

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Radiation Medicine (IRM)