Radiation Protection Dosimetry 7:143-146 (1984)
© 1984 Oxford University Press
Measurements of the Deposition Rates of Radon Daughter on Indoor Surfaces
The deposition rates of radon daughters on indoor surfaces have been measured by exposing the window of a proportional counter to the air of a house with high concentrations of radon and its daughters. Deposition velocities for unattached RaA and RaB of approximately 4 mm.s-1 were obtained by dividing the deposition rates by the concentration of unattached daughters in the air. These results agree with those obtained by other workers but are dependent on the assumptions made about the fractions of the daughters which are attached to the atmospheric aerosol.