surface deposition

Measurements of deposition velocity of radon decay products for examination of the correlation between air activity concentration of radon and the accumulated po-210 surface activity

Submitted by on Sat, 07/06/2013 - 16:43

The retrospective determination of radon exposure levels in dwellings by means of the measurement ofthe Po-210 surface activity is subject to various uncertainties. These result partly from the valuesassumed for the equilibrium factor F and for the unattached fraction f, and, more importantly, fromdifferences in the deposition velocities of short-lived decay products of Rn-222, caused by varyingconditions of turbulence.