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Proceedings Paper

Angular scattering measurements and calculations of rough spherically shaped carbon particles
Author(s): Christian Sasse; Jouni Peltoniemi
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Paper Abstract

An angular scatterometer (goniometer) was designed and built which is capable of measuring the S11 and S12 components of the scattering matrix on single particles as a function of the scattering angle (Theta) for different values of the azimuthal angle (phi) . The particle is electrostatically charged and is levitated in an electrodynamic levitator (EDL). The EDL is positioned in such a way that the particle is in the center of a semicircular detector ring which can be rotated around the particle so that different scattering planes can be measured. Spherically shaped porous carbon particles (spherocarbs) serve as candidate particles for experimental and theoretical investigations of scattering in various planes. Results are compared to theoretical modeling of stochatistic rough particles in order to assess the influence of shape and surface roughness.

Paper Details

Date Published: 1 September 1995
PDF: 9 pages
Proc. SPIE 2541, Optical Scattering in the Optics, Semiconductor, and Computer Disk Industries, (1 September 1995); doi: 10.1117/12.218329
Show Author Affiliations
Christian Sasse, DLR (Germany)
Jouni Peltoniemi, Finnish Geodetic Institute (Finland)

Published in SPIE Proceedings Vol. 2541:
Optical Scattering in the Optics, Semiconductor, and Computer Disk Industries
John C. Stover, Editor(s)

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