Carbon dioxide electron cooling rates in the atmospheres of Mars and Venus

Details Carbon dioxide electron cooling rates in the atmospheres of Mars and Venus Carbon dioxide electron cooling rates in the atmospheres of Mars and Venus

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jgre..11308008c&link_type=abstract

Journal of Geophysical Research, Volume 113, Issue E8, CiteID E08008

Physics

4

Planetary Sciences: Fluid Planets: Atmospheres (0343, 1060), Planetary Sciences: Fluid Planets: Ionospheres (2459), Planetary Sciences: Fluid Planets: Interactions With Particles And Fields

Scientific paper

The cooling of electrons in collisions with carbon dioxide in the atmospheres of Venus and Mars is investigated. Calculations are performed with both previously accepted electron energy transfer rates and with new ones determined using more recent theoretical and experimental cross sections for electron impact on CO2. Emulation of a previous model for Venus confirms the validity of the current model and shows that use of the updated cross sections leads to cooling rates that are lower by one third. Application of the same model to the atmosphere of Mars gives more than double the previous cooling rates at altitudes where the electron temperature is very low.

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