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Monitoring Radioactive Aerosols in the Object “Cover”

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Abstract

The results of an investigation of aerosols in the rooms of the object “Cover” at the Chernobyl nuclear power plant in November–December 2000 are presented. Using packets of Petryanov three-layer filtering materials, the dynamics of the volume activity of the products of the accident in the No. 4 unit and the daughter products of radon and thoron is traced, and the size of the carrier particles in room 207/5 is determined. It is shown that the 137Cs concentration varied from 0.2 to 20 Bq/m3. The median aerodynamic diameter of carrier particles ranged from 0.5 to 6 μm for 137Cs and from 0.08 to 0.8 μm for the daughter products of radon. The sources of the coarsely dispersed cesium aerosols at maximum concentration were determined in both cases.

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Authors and Affiliations

  1. State Science Center of the Russian Federation – L. Ya. Karpov Scientific-Research Institute for Physical Chemistry, Russia

    B. I. Ogorodnikov & A. K. Budyka

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  1. B. I. Ogorodnikov
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  2. A. K. Budyka
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Ogorodnikov, B.I., Budyka, A.K. Monitoring Radioactive Aerosols in the Object “Cover”. Atomic Energy 91, 1016–1020 (2001). https://doi.org/10.1023/A:1014867721873

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  • DOI: https://doi.org/10.1023/A:1014867721873

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