Measurement of Size Distribution of Submicron Particles Using New Laser Diagnostics.
MICHIGAN UNIV ANN ARBOR DEPT OF AEROSPACE ENGINEERING
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The one year research program described here was a direct extension of work completed during the 1977 AFOSRASEE Summer Faculty Research program at AFRPL. During that program the author and Dr. David Mann, AFRPL, performed the first is situ size measurements of submicron alumina Al2O3 particles that have been published to date. The new laser diagnostic technique used, Diffusion Broadening Spectroscopy, represents a new advance in the state-of-the-art of submicron particle sizing. The goal of the research described herein was to develop a data reduction procedure to extend the applicability of the technique, so that size distribution half width can be measured, in addition to particle mean diameter. The computer routine was developed to determine particle mean diameter and size distribution half width, given light scattering data obtained at two scattering angles. Sensitivity of the results was investigated and feasibility of future use of the technique in rocket motors and plumes was deduced. Author
- Lasers and Masers
- Combustion and Ignition