An Improvement to a Method for Measuring the Absorption Coefficient of Atmospheric Dust and other Strongly Absorbing Powders

Abstract

A method, described in a previous publication, permits the measurement of the optical absorption coefficient of strongly absorbing particulate matter such as atmospheric dust. This is done by mixing the sample with a powder, and measuring the resulting degradation of the diffuse reflectance of the powder. This report shows how the spectral range, over which the method is applicable, may be extended by accounting for absorption of light in the weakly absorbing powder used a diluent. An example of the application of the method to an atmospheric dust sample is presented, showing that satisfactory measurements can be made from 0.3 to about 1.6 micrometers, using BaSO4 as a diluent.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA013367

Entities

People

  • James D. Lindberg

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Advanced Electronics
  • Counter WMD
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Acquisition
  • Air Force
  • Artillery
  • Atmospheric Sciences
  • Ecology
  • Materials
  • Military Research
  • Munitions
  • New Jersey
  • New Mexico
  • Optical Properties
  • Scattering
  • Security
  • Standards
  • United States
  • Warfare

Fields of Study

  • Physics

Readers

  • Spectroscopy.
  • Surface Coatings Technology.