Passive measurement of working levels and effective diffusion constants of radon daughters by the nuclear track technique.
Measurements were made of working level ratios and the effective diffusion constants of radon daughters using a special housing designed to provide a uniform diffusional environment at the passive detectors. For 2 of 7 exposures, the measured scale of the diffusion was too large to satisfy the uniformity requirement. For the other 5, it was satisfied and reasonable working level ratios (WLR) were obtained. Such a housing could be used for extended area working level measurements but is too bulky to be suitable for personnel dosimetry. Personnel dosimetry could be done in mines using a passive area measurement of WLR combined with individual passive 222Rn measurements.
D001729:Bismuth / Q000032:analysis*; D004058:Diffusion; D007854:Lead / Q000032:analysis*; D011059:Polonium / Q000032:analysis*; D011874:Radiometry / Q000379:methods; D017687:Radon Daughters
D017687:Radon Daughters; D007854:Lead; D011059:Polonium; D001729:Bismuth