Long-term temporal variability of the radon-222 exhalation flux from a landform covered by low uranium grade waste rock
A Bollhöfer, C Doering - Journal of environmental radioactivity, 2016 - Elsevier
Radon-222 exhalation flux densities from two different substrates of several metres
thickness, waste rock and waste rock mixed with approximately 30% lateritic material, were
measured over a period of five years in the wet-dry tropics of Northern Australia. Fourteen
measurement campaigns using activated charcoal canisters (n> 1000) covered both dry and
wet seasons and showed differences in seasonal and long term trends of the 222 Rn
exhalation flux densities normalised to the 226 Ra activity concentrations of the substrate …
thickness, waste rock and waste rock mixed with approximately 30% lateritic material, were
measured over a period of five years in the wet-dry tropics of Northern Australia. Fourteen
measurement campaigns using activated charcoal canisters (n> 1000) covered both dry and
wet seasons and showed differences in seasonal and long term trends of the 222 Rn
exhalation flux densities normalised to the 226 Ra activity concentrations of the substrate …
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