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Abstract Emanation coefficients (proportion of generated Rn atoms that escape from a solid material) have been measured for 222Rn ( t 1 2 3.8 days) and 220Rn (thoron, t 1 2 , 55 s) on 68… (More)
In a pair of well- and poorly-drained soils developed on Ordovician carbonate rocks in Central Pennsylvania, the distribution with depth and chemical form of 238U, 232Th, and 226Ra have been compared… (More)
The abundance and chemical/mineralogical form of 226Ra, 238U and 232Th were determined on samples of soil and associated vegetation at 12 sites in the eastern United States. Progressive, selective… (More)