T-matrix computations of light scattering by large nonsperical particles: recent advances

Michael I. Mishchenko; Larry D. Travis; Dan W. Mackowski

doi:10.1117/12.196663

23 December 1994 T-matrix computations of light scattering by large nonsperical particles: recent advances

Michael I. Mishchenko, Larry D. Travis, Dan W. Mackowski

Proceedings Volume 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II; (1994) https://doi.org/10.1117/12.196663
Event: Satellite Remote Sensing, 1994, Rome, Italy

Abstract

In this paper we discuss the application of the T-matrix approach to rigorously compute light scattering by polydisperse, randomly oriented nonspherical particles with sizes comparable to and larger than wavelengths of observation. First, we describe an efficient method for suppressing the numerical instability of the regular T-matrix approach in computations for spheroids and finite cylinders with size parameters larger than about 25. Second, we describe how the T-matrix approach can be used to rigorously compute the scattering of light by randomly oriented two-sphere aggregates (bispheres). Both methods are extremely efficient, are applicable to scatterers with equivalent-sphere size parameters exceeding 50, and are especially suitable in computations for polydisperse particles. We report results of numerical computations that demonstrate the capabilities of the two methods and are used to discuss the effects of particle nonsphericity on light scattering.

Citation Download Citation

Michael I. Mishchenko, Larry D. Travis, and Dan W. Mackowski "T-matrix computations of light scattering by large nonsperical particles: recent advances", Proc. SPIE 2309, Passive Infrared Remote Sensing of Clouds and the Atmosphere II, (23 December 1994); https://doi.org/10.1117/12.196663

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