Heavy ions in the outer Kronian magnetosphere

Details Heavy ions in the outer Kronian magnetosphere Heavy ions in the outer Kronian magnetosphere

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..823e&link_type=abstract

Journal of Geophysical Research, vol. 88, Feb. 1, 1983, p. 823-831.

Astronomy and Astrophysics

Astronomy

27

Heavy Ions, Magnetospheric Ion Density, Saturn Atmosphere, Space Plasmas, Energy Spectra, Nitrogen, Positive Ions, Rhea (Astronomy), Titan, Voyager 1 Spacecraft, Saturn, Ions, Magnetosphere, Plasma Science Experiment, Pls, Voyager 1, Oxygen, Nitrogen, Origin, Sputtering, Source, Icy Satellites, Density, Transport, Titan, Hydrogen, Observations, Spectra, Flux, Energy, Charged Particles, Data, Calculations, Diagrams, Satellites

Scientific paper

The possible sources of the cold plasma observed in the outer magnetosphere of Saturn are analyzed. On the basis of the O(+)-H charge exchange species-specific loss mechanism, as well as abundance and rate considerations, it is concluded that the dominant heavy ion populating the equatorial outer magnetosphere is that of atomic nitrogen. Possible sources of hot plasma are also discussed, as are the inhibition of corotation by mass loading and the radial variation of composition. It is found that the observed deviations from corotation and current mass loading estimates indicate either a somewhat higher ionospheric conductance than is implied by the UVS and RSS measurements, or an overestimate of mass loading. It is suggested that the plasma gap observed by Voyager 1 outbound may be associated with a composition change.

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