Electro-static potential of E ring particles

Details Electro-static potential of E ring particles Electro-static potential of E ring particles

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.6605k&link_type=abstract

American Astronomical Society, DPS meeting #37, #66.05; Bulletin of the American Astronomical Society, Vol. 37, p.771

Astronomy and Astrophysics

Astronomy

Scientific paper

Most of the peculiar properties of Saturn's vast E ring are most likely due to electromagnetic forces acting on the charged ring particles. Thus, knowledge of the radial dependence of the electro-static grain potential is of great importance for understanding the dynamics of the E ring.
The Cosmic Dust Analyser (CDA) on the Cassini spacecraft includes a charge detector which allows a reliable determination of the potential of individual dust grains. Here we report the first in-situ determination of the grain potential within Titan's orbit. Our results indicate that outside 8 Saturnian grains are on a positive potential of about 5V while in the vicinity of Saturn's moon Enceladus the grains have negative potentials ranging between -8 and -1 V.

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