title: Light scattering by wavelength-sized particles "dusted" with subwavelength-sized grains.
abstract: The numerically exact superposition T-matrix method is used to compute the scattering cross sections and the Stokes scattering matrix for polydisperse spherical particles covered with a large number of much smaller grains. We show that the optical effect of the presence of microscopic dust on the surfaces of wavelength-sized, weakly absorbing particles is much less significant than that of a major overall asphericity of the particle shape.
authors.affiliation: NASA Goddard Institute for Space Studies, New York, NY 10025, USA. mmishchenko@giss.nasa.gov
authors.forename: Michael I
authors.initials: MI
authors.lastname: Mishchenko
authors.forename: Janna M
authors.initials: JM
authors.lastname: Dlugach
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Mackowski