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Proceedings Paper

Experimental scattering investigations and radiative transfer calculations of large arbitrarily shaped absorbing particles
Author(s): Christian Sasse
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Paper Abstract

Measured optical properties of large absorbing arbitrarily shaped particulates are compared to calculated optical properties of smooth homogeneous spheres. The particulates examined are spherical carbon particles with rough surface structure and oil shale. The results of measurements of phase functions of single particles at (lambda) equals 514.5 nm and hemispherical reflectance from 450 to 1959 nm are used in an inverse two-flux model to calculate the average albedo of a single particle. For carbon particles, ideal spheres show a higher forward scatter contribution than measured properties of rough spheres. Two types of oil shale particles with different optical properties but similar size and surface structure are investigated. Particle albedo and phase functions are compared, and the error of measuring the phase function at one wavelength is investigated. Results are also compared to isotropic scattering particles.

Paper Details

Date Published: 1 December 1993
PDF: 6 pages
Proc. SPIE 1995, Optical Scattering: Applications, Measurement, and Theory II, (1 December 1993); doi: 10.1117/12.162659
Show Author Affiliations
Christian Sasse, DLR (Germany)


Published in SPIE Proceedings Vol. 1995:
Optical Scattering: Applications, Measurement, and Theory II
John C. Stover, Editor(s)

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