Physics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1591m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 39, Nov. 1991, p. 1591-1606. Research supported by Institute of Space and Ter
Physics
20
Hydrogen, Jupiter Atmosphere, Lyman Spectra, Saturn Atmosphere, Thermosphere, Vibrational Spectra, Fluorescence, Ground State, Planetary Ionospheres, Plasma Waves
Scientific paper
The impact of fluorescence of ground state H2 on the distribution of the vibrational levels of H2 in the upper atmospheres of Jupiter and Saturn is considered for nonauroral latitudes. It is estimated that some of the higher vibrational levels may have effective temperatures greater than 3000 K on both Jupiter and Saturn. In turn, the vibrational population of v = 4 or greater levels are sufficiently increased by the fluorescence source that the chemical sink for the ionization is enhanced. As a result, ionospheric densities may be greatly affected. It is also shown that the vertical ion flows induced by horizontal neutral winds or dynamo electric fields must play some role in maintaining the plasma peaks at higher altitudes.
Majeed Tariq
McConnell John C.
Yelle Roger V.
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