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Exact Calculations of Scattering from Moderately-Nonspherical Tn-Particles: Comparisons with Equivalent Spheres

  • Warren Wiscombe
  • Alberto Mugnai

Abstract

We study extinction efficiency, absorption efficiency, and forward and backscatter efficiency for rotationally symmetric particles of the form r(θ) = ro[l +εTn(cos θ)]. Using the Extended Boundary Condition Method, as embodied in a computer code from Dr. Peter Barber, we have compared the various efficiencies, for T2- and T4-particles and 0 < ε ≤ 0.2, with the corresponding results for equal-volume and equal-projected-area spheres. A range of 0 to 10 in equivalent Mie size parameter x was considered, and results are given for nose-on incidence, for random orientation, and for random orientation plus a running mean over a size interval Δx = 1.

Keywords

Size Parameter Exact Calculation Random Orientation Absorption Efficiency Equivalent Sphere 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Barber, P. W. and Yeh, C., 1975, Appl. opt. 14,2864–2872.Google Scholar
  2. Waterman, P.C., 1965, Proc. IEEE 53,805–812.Google Scholar
  3. Zerull, R. H., 1976, Beitr. Phys. Atmos 49, 166–188.Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Warren Wiscombe
    • 1
  • Alberto Mugnai
    • 1
  1. 1.National Center for Atmospheric ResearchBoulderUSA

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