Interpretation of the spectral dependence of the negative-polarization parameters of light scattered by the solid surfaces of celestial bodies

Details Interpretation of the spectral dependence of the negative-polarization parameters of light scattered by the solid surfaces of celestial bodies Interpretation of the spectral dependence of the negative-polarization parameters of light scattered by the solid surfaces of celestial bodies

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..444s&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, May 1987, p. 444-448. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Astronomical Spectroscopy, Light Scattering, Planetary Surfaces, Polarization Characteristics, Spectrum Analysis, Albedo, Metal Oxides, Microstructure, Polarimetry, Powder (Particles)

Scientific paper

Laboratory polarimetric measurements of mixtures of fine powders (e.g., of MgO and Fe2O3) show a substantial increase in the negative polarization of light as the optical contrast of the microstructure increases. A strong spectral dependence of the inversion angle and the magnitude of the negative polarization Pmin was observed as the degree of contrast varied with wavelength. It is concluded that the spectral dependence of these negative-polarization parameters for the moon, asteroids, and the satellites of large planets can be interpreted as a manifestation of spectral differences in the albedo of the rock and regolith components of these bodies.

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