Abstract

Electrons are ejected by solar ultraviolet photons from the illuminated parts of Saturn's rings. Consequently, these portions of the rings possess significant electrical conductivity. Wc evaluate the height integral surface conductivity tensor and show that the main contribution is provided by charged dust grains. The conductivity tensor is applied to estimate the pattern of current flow along the surface of the rings and between the rings and the planet's ionosphere. Mechanisms for elevating grains along nearly radial spokes are explored.

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