Enhanced Absorption Due to Dependent Scattering

[+] Author and Article Information
Y. Ma, V. K. Varadan, V. V. Varadan

Research Center for the Engineering of Electronic and Acoustic Materials, and Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802

J. Heat Transfer 112(2), 402-407 (May 01, 1990) (6 pages) doi:10.1115/1.2910391 History: Received April 05, 1989; Revised September 25, 1989; Online May 23, 2008


The role of multiple scattering on dependent scattering as well as on dependent absorption is investigated for heterogeneous media containing a high concentration of particles. The decrease of scattering and increase of absorption for lossy (with intrinsic absorption) particles in a lossless matrix is quantitatively described using a Rayleigh region solution derived from a multiple scattering formalism. For smaller wavelengths, dependent scattering and absorption can be obtained by solving the resulting dispersion equation numerically. Results are shown for lossless particles in a lossy matrix, which models an optical coating system.

Copyright © 1990 by The American Society of Mechanical Engineers
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