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


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olivier.masson [ at ] irsn.fr

Abstract

A massive atmospheric release of radioactive 106Ru occurred in Eurasia in 2017, which must have been caused by a sizeable, yet undeclared nuclear accident. This work presents the most compelling monitoring dataset of this release, comprising 1,100 atmospheric and 200 deposition data points from the Eurasian region. The data suggest a release from a nuclear reprocessing facility located in the Southern Urals, possibly from the Mayak nuclear complex. A release from a crashed satellite as well as a release on Romanian territory (despite high activity concentrations) can be excluded. The model age of the radioruthenium supports the hypothesis that fuel was reprocessed ≤2 years after discharge, possibly for the production of a high-specific activity 144Ce source for a neutrino experiment in Italy.



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Eprint ID
49956
DOI 10.1073/pnas.1907571116

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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. and Zorko, B. (2019): Airborne concentrations and chemical considerations of radioactive ruthenium from an undeclared major nuclear release in 2017 , Proceedings of the National Academy of Sciences, p. 201907571 . doi: 10.1073/pnas.1907571116


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