Hot oxygen atoms in the upper atmospheres of Venus and Mars

Details Hot oxygen atoms in the upper atmospheres of Venus and Mars Hot oxygen atoms in the upper atmospheres of Venus and Mars

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..433n&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, May 1988, p. 433-435.

Physics

99

Density Distribution, Hot Atoms, Mars Atmosphere, Oxygen Atoms, Venus Atmosphere, Energy Distribution, Solar Cycles, Planets, Mars, Venus, Atmosphere, Oxygen, Composition, Altitude, Density, Calculations, Comparisons, Lyman-Alpha Radiation, Spacecraft Observations, Parameters, Corona

Scientific paper

This paper presents the results of calculations of the hot oxygen atom density values for the upper atmospheres of Venus (computed for solar cycle maximum) and for that of Mars (for solar cycle minimum conditions), using a two stream model to calculate the equilibrium fluxes and energy distribution of the nonthermal component of atomic oxygen. After the energy-dependent hot oxygen fluxes are calculated below the exosphere, the densities above the exobase are obtained using Liouville's equation. The values of hot oxygen atoms calculated for Venus were found to be in good agreement with the values observed by Pioneer Venus Orbiter; the Venus values are about a factor of twenty larger than the calculated values for Mars at the exobase.

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