Archives → 2022 → Vol. 62, № 2 → pp. 196–205
Article
Verification of Migration-dosimetric Model of Formation of Radiation Situation in Pine Stands in First Year after Emergency Fallout
A. N. Perevolotsky, Т. V. Perevolotskaya, S. A. Geras’kin
Russian Research Institute of Radiology and Agroecology, Obninsk, Russia
Abstract
Article presents results of verification of calculated blocks of migration-dosimetric model designed to assess redistribution of radionuclides between compartments of system «crown surface of woody plants – forest litter or moss cover – surface layer of soil» at of emergency radioactive fallout intake pine plantations and associated values of external γ-radiation dose rate. It is established that calculated and empirical data obtained during radioecological monitoring (1987–2008) in pine stands growing in 30 km exclusion zone of Chernobyl nuclear power plant agree well. Сalculated activity of 137Cs in components of system under study is in good agreement with results of empirical studies in 1987. Differences between measured and predicted values of absorbed dose rate of external γ-radiation at a height of 1 m above surface of the ground cover are no more than 10%, which indicates an adequate description of main quantitative characteristics of ionizing radiation field in pine plantations based on developed dosimetric block of model.
Keywords
radioactivity, crown surface of woody plants, surface layer of soil, radionuclides, β-radiation, γ-radiation, emergency radioactive fallout, absorbed dose rate, pine stands, emergency radioactive release
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