OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 6 — Feb. 20, 2002
  • pp: 1175–1180

Experiments on Light Scattering and Extinction by Small, Micrometer-Sized Aggregates of Spheres

Martin Schnaiter and Gerhard Wurm  »View Author Affiliations


Applied Optics, Vol. 41, Issue 6, pp. 1175-1180 (2002)
http://dx.doi.org/10.1364/AO.41.001175


View Full Text Article

Acrobat PDF (131 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We performed experiments to study the extinction, scattering, and polarization of light by ensembles of fractal dust aggregates that consist of spherical monomers large compared with the wavelength. Extinction was measured on a homogeneous dust cloud. Scattering and polarization were measured on a collimated dust beam. We found that polarization and extinction are determined only by a small size scale that is defined by a monomer and its closest neighbors in an aggregate. The scattering function might also depend on the overall size of the aggregate or the total number of monomers in an aggregate.

© 2002 Optical Society of America

OCIS Codes
(290.2200) Scattering : Extinction
(290.5820) Scattering : Scattering measurements
(290.5850) Scattering : Scattering, particles
(350.1270) Other areas of optics : Astronomy and astrophysics

Citation
Martin Schnaiter and Gerhard Wurm, "Experiments on Light Scattering and Extinction by Small, Micrometer-Sized Aggregates of Spheres," Appl. Opt. 41, 1175-1180 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-6-1175


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. P. Meakin, “Fractal aggregates in geophysics,” Rev. Geophys. 29, 317–354 (1991).
  2. G. Wurm and J. Blum, “Experiments on preplanetary dust aggregation,” Icarus 132, 125–136 (1998).
  3. C. Oh and C. M. Sorensen, “Structure factor of diffusion-limited aggregation clusters: local structure and non-self-similarity,” Phys. Rev. E 57, 784–790 (1998).
  4. C. M. Sorensen, J. Cai, and N. Lu, “Light-scattering measurements of monomer size, monomers per aggregate, and fractal dimension for soot aggregates in flames,” Appl. Opt. 31, 6547–6557 (1992).
  5. D. W. Schaefer, J. E. Martin, P. Wiltzius, and S. Canell, “Fractal geometry of colloidal aggregates,” Phys. Rev. Lett. 52, 2371–2374 (1984).
  6. J. E. Martin, D. W. Schaefer, and A. J. Hurd, “Fractal geometry of vapor-phase aggregates,” Phys. Rev. A 33, 3540–3543 (1986).
  7. P. Dimon, S. K. Sinha, D. A. Weitz, C. R. Safinya, G. S. Smith, W. A. Varady, and H. M. Lindsay, “Structure of aggregated gold colloids,” Phys. Rev. Lett. 57, 595–598 (1986).
  8. J. R. Bottiger, E. S. Fry, and R. C. Thompson, “Phase matrix measurements for electromagnetic scattering by sphere aggregates,” inLight Scattering by Irregular Shaped Particles, D. Schuerman, ed., (Plenum, New York, 1980), pp.283–290.
  9. H. Kimura, “Light-scattering properties of fractal aggregates: numerical calculations by a superposition technique and the discrete-dipole approximation,” inLight Scattering by Non-Spherical Particles: Halifax Contributions, G. Videen, Q. Fu, and P. Chylek, eds., (Army Research Laboratory, Adelphi, Md., 2000), pp.241–244.
  10. A. C. Levasseur-Regourd, M. Cabane, J. C. Worms, and V. Haudebourg, “Physical properties of dust in the solar system: relevance of a computational approach and of measurements under microgravity conditions,” Adv. Space Res. 20, 1585–1594 (1997).
  11. F. Rouleau, “Electromagnetic scattering by compact clusters of spheres,” Astron. Astrophys. 310, 686–698 (1996).
  12. J. Blum, M. Schnaiter, G. Wurm, and M. Rott, “The deagglomeration and dispersion of small dust particles principles and applications,” Rev. Sci. Instrum. 67, 589–595 (1996).
  13. J. Blum and G. Wurm, “Experiments on sticking, restructuring, and fragmentation of preplanetary dust aggregates,” Icarus 143, 138–146 (2000).
  14. G. Wurm and J. Blum, “An experimental study on the structure of cosmic dust aggregates and their alignment by motion relative to gas,” Astrophys. J. 529, L57–L60 (2000).
  15. S. Wolf, Thüringer Landessternwarte Tautenberg, Sternwarte 5, D-07778 Tautenberg, Germany (personal communication, 1999). Sternwarte 5, D-07778 Tautenberg, Germany (personal communication,

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited