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The overview of the radon and environmental characteristics measurements in the Czech show caves

. 2015 Jun ; 164 (4) : 502-9. [epub] 20150521

Language English Country Great Britain, England Media print-electronic

Document type Journal Article, Research Support, Non-U.S. Gov't

Persistent link   https://www.medvik.cz/link/pmid25999331

This paper focuses on the measurement and assessment of absorbed doses of radiation in caves of the Czech Republic, some of which exhibit high activity concentration of radon in air. Presented is an analysis and recommendations based on measurement results obtained in the underground caves over the past 12 y. The most important results for cave environments were as follows: integral radon monitoring using RAMARN detectors can provide more consistent results for calculating the effective dose; no major differences were shown in the average radon activity concentration during working time as opposed to non-working time; the unattached fraction of radioactive particles in air ranged from 0.03 to 0.6, with arithmetical average fp = 0.13; the direct dependence between equilibrium factor F and the size of the unattached fraction fp was described using the Log-Power expression ln(1/fp) = a*ln(1/F)(b); the calculated values for coefficients a and b were 1.85 and -1.096, respectively. The individual cave factor for each investigated underground area was calculated.

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