Experimental Investigation of the Opacity of Small Particles
Abstract
An experimental investigation was conducted to develop a technique for producing dispersions of submicron-radius solid particles in a carrier gas and to determine the optical parameters of these particles as a function of the wave length of electromagnetic radiation incident upon the particles. A dispersion system was devised which permitted (a) mixing of measured amounts of agglomerated submicron particles with metered quantities of preselected carrier gases, (b) application of de-agglomerative aerodynamic shear forces in a restrictive flow passage (nozzle) through which the carrier gas-particle mixture was passed, and (c) measurement of the extinction and scattering characteristics of the de-agglomerated particles downstream of the nozzle. Tests were conducted with carbon and tungsten particles having nominal radii of 0.0045 and 0.01 microns, respectively, as specified by the manufacturer. Helium and nitrogen were used as carrier gases.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1965
- Accession Number
- ADA397745
Entities
People
- P. J. Marteney
Organizations
- United Aircraft Corporation