Experimental test of the Rayleigh-Debye-Gans theory for light scattering by fractal aggregates

GM Wang; CM Sorensen

doi:10.1364/AO.41.004645

Experimental test of the Rayleigh-Debye-Gans theory for light scattering by fractal aggregates

GM Wang, CM Sorensen

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Calibrated measurements of optical (X = 488-nm) scattering cross sections, in the form of Rayleigh ratios, are presented for two fractal aggregate aerosols. The aggregates have radii of gyration of approximately 280 nm, fractal dimensions of approximately 1.75, and monomer sizes of approximately 20 nm with approximately 150 monomers per cluster. One aerosol was composed of vitreous SiO2 with a refractive index of 1.46, the other of anatase TiO2 with a refractive index of 2.61. We found good agreement with the Rayleigh-Debye-Gans prediction for the scattering cross section of fractal aggregates. (C) 2002 Optical Society of America.

Original language	English
Pages (from-to)	4645-4651
Number of pages	7
Journal	Applied Optics
Volume	41
Issue number	22
DOIs	https://doi.org/10.1364/AO.41.004645
Publication status	Published - 1 Aug 2002

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10.1364/AO.41.004645

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title = "Experimental test of the Rayleigh-Debye-Gans theory for light scattering by fractal aggregates",

abstract = "Calibrated measurements of optical (X = 488-nm) scattering cross sections, in the form of Rayleigh ratios, are presented for two fractal aggregate aerosols. The aggregates have radii of gyration of approximately 280 nm, fractal dimensions of approximately 1.75, and monomer sizes of approximately 20 nm with approximately 150 monomers per cluster. One aerosol was composed of vitreous SiO2 with a refractive index of 1.46, the other of anatase TiO2 with a refractive index of 2.61. We found good agreement with the Rayleigh-Debye-Gans prediction for the scattering cross section of fractal aggregates. (C) 2002 Optical Society of America.",

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N2 - Calibrated measurements of optical (X = 488-nm) scattering cross sections, in the form of Rayleigh ratios, are presented for two fractal aggregate aerosols. The aggregates have radii of gyration of approximately 280 nm, fractal dimensions of approximately 1.75, and monomer sizes of approximately 20 nm with approximately 150 monomers per cluster. One aerosol was composed of vitreous SiO2 with a refractive index of 1.46, the other of anatase TiO2 with a refractive index of 2.61. We found good agreement with the Rayleigh-Debye-Gans prediction for the scattering cross section of fractal aggregates. (C) 2002 Optical Society of America.

AB - Calibrated measurements of optical (X = 488-nm) scattering cross sections, in the form of Rayleigh ratios, are presented for two fractal aggregate aerosols. The aggregates have radii of gyration of approximately 280 nm, fractal dimensions of approximately 1.75, and monomer sizes of approximately 20 nm with approximately 150 monomers per cluster. One aerosol was composed of vitreous SiO2 with a refractive index of 1.46, the other of anatase TiO2 with a refractive index of 2.61. We found good agreement with the Rayleigh-Debye-Gans prediction for the scattering cross section of fractal aggregates. (C) 2002 Optical Society of America.

KW - Electromagnetic scattering

KW - Cluster morphology

KW - Optical-properties

KW - Sphere clusters

KW - Pure liquids

KW - Particles

KW - Absorption

KW - Size

KW - Soot

KW - Geometry

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Experimental test of the Rayleigh-Debye-Gans theory for light scattering by fractal aggregates

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