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   Periodicity: 4 times per year   Open access peer reviewed journal

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M. D. Bondarkov¹, M. V. Zheltonozhskaya², A. I. Lipskaya³, L. V. Sadovnikov³, V. V. Tokarevsky<sup>2

1</sup>International Radioecological Laboratory of the International Chornobyl Center, Slavutych, Ukraine
²State Specialized Enterprise "Technocentre", Chornobyl, Ukraine
³Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: The research of migration of Chornobyl origin radionuclides was carried out in vertical soil profiles of the "Ryzhyj les" waste disposal area within 5 km ChNPP zone. The 1122-soil samples were selected during 2000 - 2001 years. The γ-, β- and X-emanation of these samples were studied after corresponding preparation. The ^134,137Cs, ^154,155Eu, ²⁴¹Am and ^238+239+240Pu isotopes were identified. The (⁹⁰Sr + ⁹⁰Y) isotopes were identified in equilibrium as a result of the research of the "non thin" layers samples β-spectra. The ^238+239+240Pu isotopes were determined by L_x-emanation spectroscopy of U and Np. The migration of ^134,137Cs, ^154,155Eu, ⁹⁰Sr, ²⁴¹Am isotopes was observed to the depth of up to 30 cm, and the ^238+239+240Pu migration was observed to the depth of 10 ÷ 15 cm. The obtained data is discussed.

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