Satellite tori at Saturn

Details Satellite tori at Saturn Satellite tori at Saturn

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.8749r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Aug. 1, 1986, p. 8749-8755. Research supported by the Israel Academy

Astronomy and Astrophysics

Astronomy

49

Dione, Enceladus, Rhea (Astronomy), Saturn (Planet), Tethys, Toroidal Plasmas, Energetic Particles, Hydrogen, Oxygen, Planetary Magnetospheres, Rotating Plasmas, Solar Radiation

Scientific paper

The inner satellites of Saturn are icy bodies imbedded in a plasma environment in which they are continuously bombarded by energetic ions, corotating plasma, and solar radiation. Laboratory sputtering experiments indicate that this should result in the injection of substantial amounts of neutral H, H2, OH, H2O, and O2 into the magnetosphere. The authors model the atomic processes affecting these neutrals and the neutrals and ions formed from them and calculate the steady state neutral and ion densities expected in the plasma tori of Enceladus, Dione-Tethys, and Rhea. Comparison with observations shows that recombination can limit the Enceladus and Dione-Tethys tori to the observed densities but that transport rates of at least 4×10-8Rs2/s are required to limit torus densities at Rhea to the observed values.

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