Meteoric ion production near Jupiter

Details Meteoric ion production near Jupiter Meteoric ion production near Jupiter

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.1537g&link_type=abstract

Journal of Geophysical Research, vol. 86, Mar. 1, 1981, p. 1537-1543.

Physics

9

Atmospheric Ionization, Galilean Satellites, Ion Production Rates, Ionospheric Ion Density, Jupiter Atmosphere, Meteoritic Composition, Charge Exchange, Mass Distribution, Metal Ions, Photoionization, Pioneer 10 Space Probe, Planetary Ionospheres, Radio Occultation, Jupiter, Meteoroids, Ions, Production Rate, Ionosphere, Flux, Density, Mathematical Models, Atmosphere, Ionization, Iron, Hydrogen, Impacts, Ablation, Data, Electrons, Altitude, Interactions, Metals, Chemistry, Thermosphere, Distribution

Scientific paper

Meteoric ion layer formation within the Jovian atmosphere is examined with attention to metallic ion production in the lower ionosphere. The Fe(+) impact ionization rate within the Jovian atmosphere peaks above the mesopause with a magnitude of approximately 0.5 cu cm/sec and is much less than the ambient ionosphere photoionization rates near the late afternoon Pioneer 10 ionosphere occultation. Charge exchange of the ablated neutral Fe atoms with ambient ions can result in an Fe(+) production rate of about 10 cu cm/sec. Ignoring transport, steady state Fe(+) density maxima of about 10,000 or 1,000,000 cu cm can be maintained when Fe(+) loss is through radiative association or radiative recombination respectively. Even if an estimated lower limit to the incident meteoroid flux is used based on a meteoroid spatial density which does not vary with distance from the sun, the corresponding Fe(+) peak densities are 1,000 and 500,000 cu cm, respectively. Meteoric ion densities may thus be important in the Jovian lower ionosphere.

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