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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 11 — May. 25, 2009
  • pp: 8805–8814

Empirical forward scattering phase functions from 0.08 to 16 deg. for randomly shaped terrigenous 1–21 μm sediment grains

Y. C. Agrawal and Ole A. Mikkelsen  »View Author Affiliations

Optics Express, Vol. 17, Issue 11, pp. 8805-8814 (2009)

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We present in-water forward scattering phase functions covering the angle range 0.08 to 16° for 19 narrow-sized dispersions of randomly shaped sediment grains. These dispersions cover particle size range from 1 to 20 microns. These phase functions offer a realistic alternative to Mie theory. Qualitatively, (i) the magnitude of phase functions at the smallest angles for equal size spheres and randomly shaped particles are nearly equal; (ii) the oscillations predicted by Mie theory for spheres disappear for random shaped grains, and (iii) the tendency of phase functions of large spheres to merge at large angles is also seen with randomly shaped grains. The data are also provided in tabulated form.

© 2009 Optical Society of America

OCIS Codes
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(290.2558) Scattering : Forward scattering
(010.4458) Atmospheric and oceanic optics : Oceanic scattering

ToC Category:

Original Manuscript: March 2, 2009
Revised Manuscript: May 4, 2009
Manuscript Accepted: May 7, 2009
Published: May 11, 2009

Virtual Issues
Vol. 4, Iss. 7 Virtual Journal for Biomedical Optics

Y. C. Agrawal and Ole A. Mikkelsen, "Empirical forward scattering phase functions from 0.08 to 16 deg. for randomly shaped terrigenous 1-21 μm sediment grains," Opt. Express 17, 8805-8814 (2009)

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  1. Y. C. Agrawal, A. Whitmire, O. A. Mikkelsen and H. C. Pottsmith, "Light scattering by random shaped particles and consequences on measuring suspended sediments by Laser Diffraction" J. Geophys. Res. 113, (2008). [CrossRef]
  2. E. Boss, W. H. Slade, M. Behrenfeld, and G. Dall'Olmo, "Acceptance angle effects on the beam attenuation in the ocean" Opt. Express 17, 1535-155 (2009). [CrossRef] [PubMed]
  3. Y. C. Agrawal and H. C. Pottsmith, "Instruments for particle size and settling velocity observations in sediment transport," Mar. Geol. 168, 89-114 (2000). [CrossRef]
  4. E. D. Hirleman, "Optimal scaling of the inverse Fraunhofer Diffraction particle sizing problem: the linear system produced by Quadrature," Part. Charact. 4, 128-133 (1987). [CrossRef]
  5. W. H. Slade and E. S. Boss, "Calibrated near-forward volume scattering function obtained from the LISST particle sizer," Opt. Express 14, 3602-3614 (2006). [CrossRef] [PubMed]
  6. H. C. Van de Hulst, Light Scattering by Small Particles, (Dover, New York, 1981), pp. 470.
  7. R. Jones, "Fraunhofer diffraction by random irregular particles" Part. Charact. 4, 123-127 (1987). [CrossRef]
  8. Y. C. Agrawal, "The optical volume scattering function: temporal and vertical variability in the water column off the New Jersey coast," Limnol. Oceanogr. 50, 1787-1794 (2005). [CrossRef]

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