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Reconstruction of radiation situation at Chernobyl NPP service area on the basis of γ-ray spectrometric analysis of soil samples and published data

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Radiochemistry Aims and scope

Abstract

Reconstruction of the radiation situation in areas subjected to nuclear accidents was done with an example of the Chernobyl accident (1986) on the basis of the radionuclidic composition of soil samples. The radionuclidic composition of γ-emitters was determined 19 years after the accident in a pulverescent sandstone sample collected in July 1986 at a distance of 1.5 km from the 4th block. Using reference data and data from original papers, reconstruction of the radionuclidic composition of the sample is done on the first ten days after the accident, and possible variations of the γ-radiation dose rate were determined within the framework of the thin film model. Based on the results obtained, variations of the absorbed dose of γ-radiation in 10 days are estimated, which is necessary for making urgent decisions in the initial period after the accident. The results are well consistent with the published data on the dose rates, validating the decision on evacuation of the people from Pripyat town and from the 30-km exclusion zone.

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Authors and Affiliations

  1. Chemical Faculty, Lomonosov Moscow State University, Moscow, Russia

    V. K. Vlasov & T. B. Petrova

  2. Institute of Environmental Geoscience, Russian Academy of Sciences, Moscow, Russia

    P. S. Miklyaev

Authors
  1. V. K. Vlasov
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  2. T. B. Petrova
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  3. P. S. Miklyaev
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Additional information

Original Russian Text © V.K. Vlasov, T.B. Petrova, P.S. Miklyaev, 2007, published in Radiokhimiya, 2007, Vol. 49, No. 6, pp. 557–560.

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Vlasov, V.K., Petrova, T.B. & Miklyaev, P.S. Reconstruction of radiation situation at Chernobyl NPP service area on the basis of γ-ray spectrometric analysis of soil samples and published data. Radiochemistry 49, 637–641 (2007). https://doi.org/10.1134/S1066362207060185

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  • DOI: https://doi.org/10.1134/S1066362207060185

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