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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 22 — Aug. 1, 2002
  • pp: 4645–4651

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

Genmiao Wang and Christopher M. Sorensen  »View Author Affiliations


Applied Optics, Vol. 41, Issue 22, pp. 4645-4651 (2002)
http://dx.doi.org/10.1364/AO.41.004645


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Abstract

Calibrated measurements of optical (λ = 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.

© 2002 Optical Society of America

OCIS Codes
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(290.0290) Scattering : Scattering
(290.5870) Scattering : Scattering, Rayleigh

History
Original Manuscript: June 13, 2001
Revised Manuscript: April 19, 2002
Published: August 1, 2002

Citation
Genmiao Wang and Christopher M. Sorensen, "Experimental test of the Rayleigh-Debye-Gans theory for light scattering by fractal aggregates," Appl. Opt. 41, 4645-4651 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-22-4645

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