Real-Time Concentration Monitoring of Large Aerodynamic Diameter Fiber Aerosols Using the Geometric Optic Inversion Technique

Abstract

Characterization of screening aerosols requires a measurement of the concentration of the aerosol cloud. For large aerodynamic diameter materials this is not always feasible. An alternate method, using geometric optic inversion, is described and derived. This inversion employs measurement of the transmission through the material by a short wavelength energy beam, such as Helium Neon laser. The transmission is then used to calculate the concentration of the material. Cloud concentrations calculated by this method are compared to measured concentrations, employing a unique sampling filter. Keywords: Aerosol; Geometrics; Optics; Concentrations; Transmittance; Extinction; Pathlength.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1990
Accession Number
ADA224167

Entities

People

  • D. H. Anderson
  • J. F. Embury
  • R. J. Wright

Organizations

  • Edgewood Chemical Biological Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Diameters
  • Electron Microscopes
  • Extinction
  • Flow Rate
  • Helium Neon Lasers
  • Inversion
  • Laser Beams
  • Lasers
  • Materials
  • Measurement
  • New York
  • Optical Properties
  • Optics
  • Sampling
  • Scanning Electron Microscopes
  • Short Wavelengths
  • Transmittance

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Optical Physics and Photonics.
  • Systems Analysis and Design

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers