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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 4 — Feb. 1, 2005
  • pp: 591–596

Optical properties of randomly distributed soot: improved polarimetric and intensity scattering functions

Jean-Baptiste Renard, Daniel Daugeron, Pascal Personne, Guillaume Legros, Jacques Baillargeat, Edith Hadamcik, and Jean-Claude Worms  »View Author Affiliations


Applied Optics, Vol. 44, Issue 4, pp. 591-596 (2005)
http://dx.doi.org/10.1364/AO.44.000591


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Abstract

Reference scattering curves for polarization and intensity produced by aggregates and agglomerates of ethylene and kerosene soot are obtained for scattering angles in the 10-170° range. The polarization measurements were obtained with the Propriétés Optiques des Grains Astronomiques et Atmosphériques instrument for particles that levitate in microgravity during parabolic flights and on the ground by an air draught technique. The intensity measurements were obtained also on the ground with a Laboratoire de Metéorologie Physique nephelometer. The maximum polarization is of the order of 80% at a scattering angle of 80° at lambda = 632.8 nm and approximately 75% at an angle of 90° at lambda = 543.5 nm. The polarization increases by approximately 10% when the size of the agglomerate increases from 10 μm to a few hundred micrometers. The intensity curve exhibits a strong increase at small scattering angles. These reference curves will be used in the near future for the detection of stratospheric soot by remote-sensing measurement techniques.

© 2005 Optical Society of America

OCIS Codes
(010.1110) Atmospheric and oceanic optics : Aerosols
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(290.0290) Scattering : Scattering

Citation
Jean-Baptiste Renard, Daniel Daugeron, Pascal Personne, Guillaume Legros, Jacques Baillargeat, Edith Hadamcik, and Jean-Claude Worms, "Optical properties of randomly distributed soot: improved polarimetric and intensity scattering functions," Appl. Opt. 44, 591-596 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-4-591

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