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Radon daughter dosimeter readout
A2 Portion of sphere covered by detector for point source located
1 other sections not shown
2tt x dx alpha emission alpha energy average field barrier detector presents BLOCK DIAGRAM Bureau of Mines calculated charge amplifier circular source Common/Radon/X,D,R computer program daughter decays detector area dimensions disk distance between detector electronic instrument field of view figure A-4 filter head filter paper func function geometry factor INSTRUMENT FOR RADON John Durkin Kusnetz method level hours MCA curve measured WLH miner multichannel analyzer numbers Nx Nx and N2 obtained particles emitted perpendicular distance point along source point source pulse height RaC Counter RaC Discriminator radius of detector radius of source radon daughter dosimeter radon daughters contained ratio readout Report of investigations shown in figure shows a plot solid angle subtended solid-state surface barrier source and detector source with spherical source-to-detector distance spot checking standard method surface area containing surface barrier detector TABLE A-l total number emanating U.S. Dept uniform distribution uranium mining Vector view factor X-Y plane