Attenuated Total Reflection Method for Obtaining Optical Constants of Powders.

Abstract

An apparatus designed to measure the optical constants of a powder suspended in a liquid is described. A laser source (3.391 m) and attenuated total reflection approach are used. The accuracy of the apparatus is evaluated by comparing measured results for a liquid hydrocarbon to published results from specular reflection measurements. The applicability of the Maxwell-Garnett effective medium theory is considered. Keywords include: Optical constants; Laser; Carbon black; Attenuated total reflectance; Effective medium; Complex permittivity; Infrared; Maxwell-Garnett theory; Complex refractive index.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1985
Accession Number
ADA154094

Entities

People

  • I. R. Chandler
  • K. D. Moeller
  • V. P. Tomaselli

Organizations

  • Fairleigh Dickinson University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Accuracy
  • Algorithms
  • Alkanes
  • Angle Of Incidence
  • Classification
  • Gunpowder
  • Lasers
  • Materials
  • Measurement
  • Optical Properties
  • Physics
  • Radiation
  • Reflection
  • Refraction
  • Refractive Index
  • Specular Reflection

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Spectroscopy.

Technology Areas

  • Directed Energy