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Optics Express

Optics Express

  • Editor: C. Martijin de Sterke
  • Vol. 15, Iss. 9 — Apr. 30, 2007
  • pp: 5572–5588

Rayleigh-Gans scattering approximation: surprisingly useful for understanding backscattering from disk-like particles

Howard R. Gordon  »View Author Affiliations


Optics Express, Vol. 15, Issue 9, pp. 5572-5588 (2007)
http://dx.doi.org/10.1364/OE.15.005572


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Abstract

Recent computations of the backscattering cross section of randomly-oriented disk-like particles (refractive index, 1.20) with small-scale internal structure, using the discrete-dipole approximation (DDA), have been repeated using the Rayleigh-Gans approximation (RGA). As long as the thickness of the disks is approximately 20% of the wavelength (or less), the RGA agrees reasonably well quantitatively with the DDA. The comparisons show that the RGA is sufficiently accurate to be useful as a quantitative tool for exploring the backscattering features of disk-like particles with complex structure. It is used here to develop a zeroth-order correction for the neglect of birefringence on modeling the backscattering of detached coccoliths from E. huxleyi.

© 2007 Optical Society of America

OCIS Codes
(010.4450) Atmospheric and oceanic optics : Oceanic optics
(290.1350) Scattering : Backscattering

ToC Category:
Atmospheric and ocean optics

History
Original Manuscript: March 20, 2007
Revised Manuscript: April 19, 2007
Manuscript Accepted: April 19, 2007
Published: April 23, 2007

Citation
Howard R. Gordon, "Rayleigh-Gans scattering approximation: surprisingly useful for understanding backscattering from disk-like particles," Opt. Express 15, 5572-5588 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-9-5572


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References

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