Ionospheric models of Saturn, Uranus, and Neptune

Details Ionospheric models of Saturn, Uranus, and Neptune Ionospheric models of Saturn, Uranus, and Neptune

Mar 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...24..358a&link_type=abstract

Icarus, vol. 24, Mar. 1975, p. 358-362. Research supported by the Kitt Peak National Observatory.

Physics

8

Atmospheric Models, Neptune (Planet), Planetary Atmospheres, Planetary Ionospheres, Saturn (Planet), Uranus (Planet), Atmospheric Chemistry, Hydrogen Ions, Photochemical Reactions, Recombination Reactions, Vertical Distribution

Scientific paper

Model ionospheres are calculated for Saturn, Uranus, and Neptune. Protons are the major ions above 150 km altitude measured from a reference level where the hydrogen density is 10 quadrillion molecules per cu cm, while below 150 km quick conversion of protons to positively charged H3 ions by a three-body association mechanism leads to a rapid removal of ionization in dissociative recombination of positive H3 ions. Electron-density maxima are found at about 260 km for Saturn and Uranus and 200 km for Neptune. Present knowledge of the physical and chemical processes in the atmospheres of these planets suggests that their ionospheres probably will not be Jupiter-like.

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