期刊
OPTICS COMMUNICATIONS
卷 261, 期 1, 页码 71-78出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2005.11.059
关键词
radiative transfer; multiple scattering; diffuse reflectance
类别
Diffuse reflectance spectra of paint coatings with different pigment concentrations, normally illuminated with unpolarized radiation, have been measured. A four-flux radiative transfer approach is used to model the diffuse reflectance of TiO2 (rutile) pigmented coatings through the solar spectral range. The spectral dependence of the average pathlength parameter and of the forward scattering ratio for diffuse radiation, are explicitly incorporated into this four-flux model from two novel approximations. The size distribution of the pigments has been taken into account to obtain the averages of the four-flux parameters: scattering and absorption cross sections, forward scattering ratios for collimated and isotropic diffuse radiation, and coefficients involved in the expansion of the single particle phase function in terms of Legendre polynomials. (C) 2005 Elsevier B.V. All rights reserved.
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