Estimation of the ratio of Sr-90 and Cs-137 activities in the Chernobyl depositions in the territory of the Russian Federation

"Radiation and Risk". 2001. Vol. 12, pp.135-134

Authors

Ermilov A.P., Ziborov A.M.
Scientific Productive Association “VNIIFTRI”, Mendeleyevo, Moscow region
Ministry of Emergencies of Russian Federation, Moscow.

Abstract

Correlative relationship between activities of ⁹⁰Sr to ¹³⁷Cs in condenses of the Chernobyl fallouts on April 26, 1986 was detected. The ratio was estimated with the use of data of the Institute of Global Climate and Ecology of the State Committee of Hydrometeorology and Russian Academy of Sciences. The data are derived from measurements of ⁹⁰Sr, ¹³⁷Cs and ^239+240Pu in soil samples taken in Bryansk, Kaluga, Oriol and Ryazan regions in 1992. Activity of ⁹⁰Sr from the condense was found to be governing factor when specific activity of ¹³⁷Cs was > 2000 Bq/kg.

Key words
Activity, ⁹⁰ Sr, ¹³⁷Cs, correlation ratios, condensation component, Chernobyl precipitation, activity measurements, soil samples, specific activity.

References

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