title: Determining 222Rn diffusion lengths in soils and sediments.
abstract: Radon-222 diffusion length has been measured for 28 Danish soils and sediments. Samples were placed in a diffusion column connected to a 222Rn reservoir and the transport of 222Rn through the column was measured. The diffusion length was found by comparing the measured data to time-dependent diffusion theory. Dry silt, sand and gravel materials showed diffusion lengths from 160 cm to 190 cm. For wet clay materials, diffusion lengths of about 1 cm were found.
authors: Risø National Laboratory, Roskilde, Denmark.
authors: J
authors: J
authors: Søgaard-Hansen
authors: A
authors: A
authors: Damkjaer
mesh_terms: D003718:Denmark; D004058:Diffusion; D011886:Radon; D012987:Soil
chemical_list: D012987:Soil; D011886:Radon