Physics
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..999r&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 14, Oct. 1987, p. 999-1002.
Physics
17
Hydrogen Clouds, Saturn Atmosphere, Ultraviolet Spectroscopy, Voyager Project, Atmospheric Models, Electron Energy, Planetary Magnetospheres, Saturn, Hydrogen, Clouds, Voyager Mission, Spacecraft Observations, Uvs Instrument, Spectrometry, Torus, Source, Hypotheses, Escape, Satellites, Titan, Atmosphere, Exosphere, Models, Magnetosphere, Sputtering, Ionization, Transport, Plasma, Density, Heavy Ions, Protons, Calculations, Neutral Particles, Dione, Tethys
Scientific paper
The 30-day reports from the Voyager Ultraviolet Spectrometer team characterize the atomic hydrogen observed near Saturn as a torus with a half width of 7 Saturnian radii. The atomic processes occurring in the inner magnetosphere are modelled, including sputtering, ionization, charge exchange, ion-atom interchange, recombination, and transport, and a neutral hydrogen source is added to test the proposal that a hydrogen cloud exists in this region. Plasma observations in the inner magnetosphere are found to be inconsistent with the presence of a dense atomic hydrogen cloud. Thus, it is concluded that the hydrogen cloud must be a torus as originally reported, and that the cloud does not extend inward to the orbits of the inner satellites of Saturn.
Eviatar Aharon
Richardson John D.
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