INVESTIGATION OF METHODS TO MEASURE SIZE DISTRIBUTION OF FOG DROPLETS AND CONDENSATION NUCLEI
Final rept. 1 Apr 1962-17 Apr 1965
BATTELLE MEMORIAL INST COLUMBUS OH
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This report describes the development of a light-scattering cascade impactor to measure the size distribution of fog droplets in the range from 0.5 micron to 16 microns. The instrument comprises six impaction stages, each equipped with a forward-light-scattering optical system to measure fog droplets of size 16, 8, 4, 2, 1, and 0.5 micron, respectively. An impaction stage to remove particles larger than 16 microns is installed at the instrument intake. Two additional stages are furnished for calibration of the electronic and optical systems. Feasibility of a condensation-nuclei counter based on the principle of electrostatic precipitation was investigated in the laboratory.
- Test Facilities, Equipment and Methods