Physics – Geophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pggp.rept..276g&link_type=abstract
In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1990 p 276-278 (SEE N92-10728 01-91)
Physics
Geophysics
Light Scattering, Lunar Soil, Mie Scattering, Particle Size Distribution, Refractivity, Regolith, Size Distribution, Contours, Linear Polarization, Surveys
Scientific paper
A fundamental input to models of light scattering from planetary regoliths is the mean phase function of the regolith particles. Using the known size distribution for typical lunar soils, the mean phase function and mean linear polarization for a regolith volume element of spherical particles of any composition were calculated from Mie theory. The two contour plots given here summarize the changes in the mean phase function and linear polarization with changes in the real part of the complex index of refraction, n - ik, for k equals 0.01, the visible wavelength 0.55 micrometers, and the particle size distribution of the typical mature lunar soil 72141. A second figure is a similar index-phase surface, except with k equals 0.1. The index-phase surfaces from this survey are a first order description of scattering by lunar-like regoliths of spherical particles of arbitrary composition. They form the basis of functions that span a large range of parameter-space.
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