Accession Number : AD0759490

Title :   Determination of the Optical Absorption Coefficient of Powdered Materials Whose Particle Size Distribution and Refractive Indices Are Not Known.

Descriptive Note : Research and development technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Lindberg,James D. ; Snyder,David G.

Report Date : APR 1973

Pagination or Media Count : 27

Abstract : LE Size Distribution and Refractive Indices Are Not Known.Research and development technical rept.,Lindberg,James D. ;Snyder,David G. ;ECOM-5487DA-1-T-061102-B-53-A1-T-061102-B-53-A-19(*aerosols, light transmission), (*atmospheres, optical properties), (*dust, reflectivity), absorption spectra, experimental designA method has been devised, based on the Kubelka-Munk theory of diffuse reflectance, for obtaining an estimate of the optical absorption coefficient of a finely powdered material which has been collected on the surface of a membrane filter. The procedure does not require any knowledge of either the real refractive index or particle size distribution of the material. No mechanical or chemical processing is involved, and only one sample is required. Results of experimental tests on materials of known absorption coefficient are presented. (Author)

Descriptors :   (*AEROSOLS, LIGHT TRANSMISSION), (*ATMOSPHERES, OPTICAL PROPERTIES), (*DUST, REFLECTIVITY), ABSORPTION SPECTRA, EXPERIMENTAL DESIGN

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE