Radiation Protection Dosimetry 7:155-158 (1984)
© 1984 Oxford University Press
Turbulent Plateout of Radon Daughters
US Bureau of Mines studies show that turbulence plays an essential role in the plateout of aerosols in radon chamber, rooms, and mines when the Reynolds number is greater than 10,000. A well defined turbulence can be achieved by using fans with known characteristics. A simple formula can be used to calculate the aerosol plateout and the results can be compared with experimental data. Data for aerosol diameters greater than 0.075 µm show poor agreement with theory. A tentative argument is presented for a wall sticking coefficient less than unity. At aerosol diameters smaller than 0.05 µm, the fan turbulence formula and the multiple screen method agrees well with the experimental data.