8. Optical methods for determining the concentration and particle size

G. P. Arumov, A. V. Bukharin, A. V. Turin
Space Research Institute, Russian Academy of Science

Method for determining the equivalent microphysical cross-section of polydisperse particles in the low layer dust

Equivalent cross section polydisperse and non-spherical particles found as the ratio of the mean square cross-section of the middle cross section. To do this, get a digital image of dust particles through a microscope. Particles corresponds to the cross-section 1.4 10-8 m2 (29%). Equivalent cross section can be compared monodisperse. Then analyzed the scattering layer of non-spherical particles can be replaced by a layer of monodisperse with this cross section. In probing the surface layer of the atmosphere contribute to the equivalent cross-section of a molecular component is much smaller than the cross section on the dust particles. The proposed method can be used for remote sensing measurement assurance microstructure scattering media.
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