Exact Calculation of Light Scattering from a Particle on a Mirror

Abstract

Exact methods have been developed for calculating light scattering from particles on a perfectly reflecting surface. The computed solutions obey Maxwell's equations and the appropriate boundary conditions. A brief discussion of the theory is followed by a presentation and discussion of selected scattering results. Comparisons are made with the predictions of Young's forward scatter Mie theory model. Under certain conditions the exact results differ significantly from Mie theory. The exact differential cross sections exhibit large amplitude oscillations that are not predicted by Mie theory. 'Me bidirectional reflectance distribution function (BRDF) is also calculated using exact scattering theory for both spherical and hemispherical particles that are both absorptive (complex index of refraction) and nonabsorptive (real index of refraction). These exact BRDF results are compared to the predictions of Young's model.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1992
Accession Number
ADA258464

Entities

People

  • B R Johnson

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Amplitude
  • Detection
  • Detectors
  • Differential Cross Sections
  • Diffraction
  • Distribution Functions
  • Jet Propulsion
  • Light Scattering
  • Materials
  • Oscillation
  • Particle Size
  • Particles
  • Physics Laboratories
  • Refractive Index
  • Scattering
  • Scattering Cross Sections
  • Space Systems

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Calculus or Mathematical Analysis
  • Spectroscopy.