Publication Abstracts

Mishchenko et al. 2016

Mishchenko, M.I., J.M. Dlugach, and N. Zakharova, 2016: Demonstration of numerical equivalence of ensemble and spectral averaging in electromagnetic scattering by random particulate media. J. Opt. Soc. Amer. A, 33, no. 4, 618-624, doi:10.1364/JOSAA.33.000618.

The numerically exact superposition T-matrix method is used to model far-field electromagnetic scattering by two types of particulate object. Object 1 is a fixed configuration which consists of N identical spherical particles (with N = 200 or 400) quasi-randomly populating a spherical volume V having a median size parameter of 50. Object 2 is a true discrete random medium (DRM) comprising the same number N of particles randomly moving throughout V. The median particle size parameter is fixed at 4. We show that if Object 1 is illuminated by a quasi-monochromatic parallel beam then it generates a typical speckle pattern having no resemblance to the scattering pattern generated by Object 2. However, if Object 1 is illuminated by a parallel polychromatic beam with a 10 bandwidth then it generates a scattering pattern that is largely devoid of speckles and closely reproduces the quasi-monochromatic pattern generated by Object 2. This result serves to illustrate the capacity of the concept of electromagnetic scattering by a DRM to encompass fixed quasi-random particulate samples provided that they are illuminated by polychromatic light.

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BibTeX Citation

@article{mi08120k,
  author={Mishchenko, M. I. and Dlugach, J. M. and Zakharova, N.},
  title={Demonstration of numerical equivalence of ensemble and spectral averaging in electromagnetic scattering by random particulate media},
  year={2016},
  journal={J. Opt. Soc. Amer. A},
  volume={33},
  number={4},
  pages={618--624},
  doi={10.1364/JOSAA.33.000618},
}

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RIS Citation

TY  - JOUR
ID  - mi08120k
AU  - Mishchenko, M. I.
AU  - Dlugach, J. M.
AU  - Zakharova, N.
PY  - 2016
TI  - Demonstration of numerical equivalence of ensemble and spectral averaging in electromagnetic scattering by random particulate media
JA  - J. Opt. Soc. Amer. A
VL  - 33
IS  - 4
SP  - 618
EP  - 624
DO  - 10.1364/JOSAA.33.000618
ER  -

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