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Tenth Conference on Electromagnetic and Light Scattering
June, 17-22, 2007, Bodrum, Turkey

DOI: 10.1615/ICHMT.2007.ConfElectromagLigScat


ISBN Print: 978-1-56700-244-7

Interrelating angular scattering characteristics to internal electric fields of wavelength-scale Gaussian particles

pages 221-224
DOI: 10.1615/ICHMT.2007.ConfElectromagLigScat.580
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摘要

We study the effect of internal electric field on the scattered field by modifying the electric field components of the discretized internal field of the particle. The internal fields for incident X-polarized and Y-polarized wave have been computed for a Gaussian-random-sphere particle using Discrete Dipole Approximation. The incident field propagates in the direction of the Z-axis. We show that both the Z- and X-component of the internal field cause negative polarization, the Z-component directly and the X-component through constructive interference between the contributions from different parts of the particle interior. The former component has a more pronounced influence on the overall polarization, while the latter component dominates the negative linear polarization close to the backscattering direction and is additionally seen to be responsible for the backscattering enhancement in intensity.

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