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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 30 — Oct. 20, 1994
  • pp: 7180–7186

Light scattering from nonspherical airborne particles: experimental and theoretical comparisons

Edwin Hirst, Paul H. Kaye, and John R. Guppy  »View Author Affiliations


Applied Optics, Vol. 33, Issue 30, pp. 7180-7186 (1994)
http://dx.doi.org/10.1364/AO.33.007180


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Abstract

A laser light-scattering instrument has been designed to permit an investigation of the spatial intensity distribution of light scattered by individual airborne particles constrained within a laminar flow, with a view to providing a means of classifying the particles in terms of their shape and size. Ultimately, a means of detecting small concentrations of potentially hazardous particles, such as asbestos fiber, is sought. The instrument captures data relating to the spatial distribution of light scattered from individual particles in flow. As part of an investigation to optimize orientation control over particles within the sample airstream, the instrument has been challenged with nonspherical particles of defined shape and size, and a simple theoretical treatment based on the Rayleigh–Gans formalism has been used to model the spatial intensity distribution of light scattered from these particle types and hence derive particle orientation data. Both experimental and theoretical scattering data are presented, showing good agreement for all particle types examined.

© 1994 Optical Society of America

History
Original Manuscript: December 15, 1993
Revised Manuscript: March 22, 1994
Published: October 20, 1994

Citation
Edwin Hirst, Paul H. Kaye, and John R. Guppy, "Light scattering from nonspherical airborne particles: experimental and theoretical comparisons," Appl. Opt. 33, 7180-7186 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-30-7180


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References

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