Theoretical Basis for the Determination of the Concentration of Radon Decay Products in Air from the Activity of a Particulate Air Sample

摘要

Linear relationships between the radon decay count rate at a certain time, or the number of counts in a certain time interval, and the decay product supply rates during the sampling are derived. If m measurements (m or = n) are obtained, the supply rates of the n decay products can be derived by solving a set of m linear equations. If the volume rate of sampling and the retention efficiency of the filter used for sampling is known, the concentrations can be computed from the supply rates.