Angular scattering measurements and calculations of rough spherically shaped carbon particles

Christian Sasse; Jouni Peltoniemi

doi:10.1117/12.218329

1 September 1995 Angular scattering measurements and calculations of rough spherically shaped carbon particles

Christian Sasse, Jouni Peltoniemi

Proceedings Volume 2541, Optical Scattering in the Optics, Semiconductor, and Computer Disk Industries; (1995) https://doi.org/10.1117/12.218329
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

Citation Download Citation

Christian Sasse and Jouni Peltoniemi "Angular scattering measurements and calculations of rough spherically shaped carbon particles", Proc. SPIE 2541, Optical Scattering in the Optics, Semiconductor, and Computer Disk Industries, (1 September 1995); https://doi.org/10.1117/12.218329

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