Field tests using radioactive matter 2
| Autor: | J. Hovorka, J. Hulka, P. Kuca, Petr Rulík, V. Beckova, J. Helebrant, A. Fronka, I. Cespirova, Z. Prouza, J. Skrkal |
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| Rok vydání: | 2012 |
| Předmět: |
Aerosols
Radionuclide Radiation Radiological and Ultrasound Technology Explosive material Mathematical model Public Health Environmental and Occupational Health General Medicine Aerodynamics Mechanics Models Theoretical Aerosol Moment (mathematics) Radiation Protection Volume (thermodynamics) Environmental science Radiology Nuclear Medicine and imaging Radioactive Hazard Release Blast wave Environmental Monitoring Radioactive Pollutants |
| Zdroj: | Radiation Protection Dosimetry. 154:207-216 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncs209 |
| Popis: | Results of field tests with explosive dispersal of a radioactive substance (RaS) are presented. The paper deals with tests exploiting artificial obstacles as a continuation and expansion of the tests used in this study performed in free area described previously. The essential goal of the tests was to estimate the distribution of the released RaS in the case of intentional abuse of radioactive sources and to get a set of data applicable to testing physical or mathematical models of propagation. Effects of different geometrical and meteorological conditions on the distribution of dispersed RaS were studied via the assessment of dose rate, surface and volume activities, aerosol mass and activity aerodynamic diameters. The principal results can be summarised as follows: the prevalent proportion of the activity of the radionuclide dispersed by an explosion (born by the blast wave and by air convection) is transferred to the detection system/collecting pads essentially within the first minute. Enhanced aerosol mass concentrations were also detected within the same period. The RaS carried by the blast wave passed through the polygon (50 m) within |
| Databáze: | OpenAIRE |
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