Expansions for two-dimensional back-scattering from a semi-infinite medium with refractive index greater than unity

Two-dimensional scattering from a semi-infinite medium with a refractive index greater than unity is investigated. The incident radiation is collimated and normal to the surface of a pure scattering medium. The spatial variation of the incident radiation is characterized by a spatial frequency. Expa...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 1991-04, Vol.45 (4), p.205-210
Main Authors: Crosbie, A.L., Shieh, S.M.
Format: Article
Language:English
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Summary:Two-dimensional scattering from a semi-infinite medium with a refractive index greater than unity is investigated. The incident radiation is collimated and normal to the surface of a pure scattering medium. The spatial variation of the incident radiation is characterized by a spatial frequency. Expansions valid for small spatial frequencies are developed and used to find solutions valid for large optical distances from an incident Gaussian-shaped laser beam. Expressions for the back-scattered intensity and flux are presented. Also, the solution for a strongly anisotropic phase function which is composed of a spike in the forward direction superimposed on an otherwise isotropic phase function is expressed in terms of the isotropic results.
ISSN:0022-4073
1879-1352
DOI:10.1016/0022-4073(91)90054-T