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The scattering of light by a suspension of coated spherical particles: effects of polydispersity on cross sections

A Quirantes and A V Delgado

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The effect of polydispersity on extinction cross sections is studied for a particle system composed of coated, spherical particles. Aden - Kerker equations, governing the light-scattering behaviour of the system, are formulated in a way that makes them more suitable for computation purposes. Differences found between light scattered by non-absorbing and highly absorbing particles show the importance of using accurate refractive indices, especially when dealing with their imaginary part, which accounts for absorption.


PACS

78.20.Ci Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)

78.20.Bh Theory, models, and numerical simulation

Subjects

Condensed matter: electrical, magnetic and optical

Dates

Issue 15 (7 August 1997)

Received 23 January 1997, in final form 18 April 1997



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