Frequency dependent dielectric constants of discrete random media

  • V. V. Varadan
  • V. N. Bringi
  • V. K. Varadan
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 154)


Numerical computations of the effective dielectric constant of discrete random media are presented as a function of frequency. Such media have a complex dielectric constant giving rise to absorption of a propagating wave both due to geometric dispersion or multiple scattering as well as absorption, if any, due to the viscosity of the particles and the matrix medium. We are concerned with the absorption due to multiple scattering. The scattering characteristics of the individual particles are described by a transition or T-matrix. The effects of two models of the pair correlation function which arises in the multiple scattering analysis are considered. Pie conclude that the well stirred approximation (WSA) is good for sparse concentrations and/or high frequencies whereas the Percus-Yevick approximation (P-YA) is preferred for higher concentrations.


Multiple Scattering Pair Correlation Function Effective Dielectric Constant Complex Dielectric Constant Coherent Field 
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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • V. V. Varadan
    • 1
  • V. N. Bringi
    • 1
  • V. K. Varadan
    • 1
  1. 1.Wave Propagation Group Boyd LaboratoryThe Ohio State UniversityColumbus

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