Publication Abstracts

Mishchenko et al. 1996

Mishchenko, M.I., L.D. Travis, and A. Macke, 1996: Scattering of light by polydisperse, randomly oriented, finite circular cylinders. Appl. Opt., 35, 4927-4940, doi:10.1364/AO.35.004927.

We use the T-matrix method, as described by Mishchenko [Appl. Opt. 32, 4652 (1993)], to rigorously compute light scattering by finite circular cylinders in random orientation. First we discuss numerical aspects of T-matrix computations specific for finite cylinders and present results of benchmark computations for a simple cylinder model. Then we report results of extensive computations for polydisperse, randomly oriented cylinders with refractive index 1.53 + 0.008i, diameter-to-length ratios 1/2, 1/1.4, 1, 1.4, and 2, and effective size parameters ranging from 0 to 25. These computations parallel our recent study of light scattering by polydisperse, randomly oriented spheroids and are used to compare scattering properties of the two classes of simple convex particles. Despite the significant difference in shape between the two particle types (entirely smooth surface for spheroids and sharp rectangular edges for cylinders), the comparison shows rather small differences in the integral photometric characteristics (total optical cross sections, single scattering albedo, and asymmetry parameter of the phase function) and the phase function. The general patterns of the other elements of the scattering matrix for cylinders and aspect-ratio-equivalent spheroids are also qualitatively similar, although noticeable quantitative differences can be found in some particular cases. In general, cylinders demonstrate much less shape dependence of the elements of the scattering matrix than do spheroids. Our computations show that, like spheroids and bispheres, cylinders with surface-equivalent radii smaller than a wavelength can strongly depolarize backscattered light, thus suggesting that backscattering depolarization for nonspherical particles cannot be universally explained using only geometric-optics considerations.

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BibTeX Citation

@article{mi07700f,
  author={Mishchenko, M. I. and Travis, L. D. and Macke, A.},
  title={Scattering of light by polydisperse, randomly oriented, finite circular cylinders},
  year={1996},
  journal={Appl. Opt.},
  volume={35},
  pages={4927--4940},
  doi={10.1364/AO.35.004927},
}

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RIS Citation

TY  - JOUR
ID  - mi07700f
AU  - Mishchenko, M. I.
AU  - Travis, L. D.
AU  - Macke, A.
PY  - 1996
TI  - Scattering of light by polydisperse, randomly oriented, finite circular cylinders
JA  - Appl. Opt.
VL  - 35
SP  - 4927
EP  - 4940
DO  - 10.1364/AO.35.004927
ER  -

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