Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

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Abstract: Dynamics of bioavailability of freshly introduced ¹³⁷Cs has been studied in 2-year lab experiments for peat-bog soils of Rokytne district of Rivne region. The obtained parameters of dynamics of root accumulation of ¹³⁷Cs by herbaceous plants in peat soils with abnormally high bioavailability differ from those previously reported in the literature. Fast period of half-reduction of the concentration ratio of ¹³⁷Cs was 0.2-0.3 year, and the concentration ratio reached the stable level in 1-2 years. Ratio of the fast to slow components of the concentration ratio extrapolated at the moment of radiocesium injection into soil was estimated as 4-5.

Keywords: ¹³⁷Cs, dynamics, accumulation coefficient, transfer factor, peat-bog soils, Chernobyl accident.

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