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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 22 — Oct. 25, 2010
  • pp: 23343–23352

Two-dimensional Guinier analysis: Application to single aerosol particles in-flight

Matthew J. Berg, Steven C. Hill, Yong-Le Pan, and Gorden Videen  »View Author Affiliations

Optics Express, Vol. 18, Issue 22, pp. 23343-23352 (2010)

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This work presents an apparatus that measures near-forward two-dimensional elastic scattering patterns of single aerosol particles and proposes a two-angle extension of the Guinier law to analyze these patterns. The particles, which approximately range from 2 to 8 micrometers in size, flow through the apparatus in an aerosol stream. A spatial filtering technique separates the near-forward portion of the patterns from the illumination light. Contours intended to represent the geometrical profile of the particles are generated from the patterns using the extension of the Guinier law. The analysis is applied to spherical and nonspherical particles, and the resulting contours are found to be consistent with particle shape only for spherical particles.

© 2010 Optical Society of America

OCIS Codes
(290.0290) Scattering : Scattering
(290.1090) Scattering : Aerosol and cloud effects
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(290.2558) Scattering : Forward scattering

ToC Category:

Original Manuscript: August 30, 2010
Revised Manuscript: October 15, 2010
Manuscript Accepted: October 15, 2010
Published: October 20, 2010

Matthew J. Berg, Steve C. Hill, Yong-Le Pan, and Gorden Videen, "Two-dimensional Guinier analysis: application to single aerosol particles in-flight," Opt. Express 18, 23343-23352 (2010)

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