The O(+) + CO2 reaction - New results and atmospheric implications

Details The O(+) + CO2 reaction - New results and atmospheric implications The O(+) + CO2 reaction - New results and atmospheric implications

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9613881h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 1, 1991, p. 13,881-13,886.

Physics

11

Carbon Dioxide, Gas-Ion Interactions, Oxygen Ions, Planetary Ionospheres, Reaction Kinetics, Atmospheric Chemistry, Chemical Release Modules, Mars Atmosphere, Venus Atmosphere

Scientific paper

The vibrational distribution of the O2(+) product ion in the reaction of O(+) with CO2 is measured in a selected-ion flow tube using the monitor-ion technique. At 300 K the measured vibrational distribution is 45 percent of the ions in v = 1, 23 percent in v = 0, and 32 percent when v is 2 or more. However, it is possible that vibrational quenching by the monitor gas may affect the distribution, and the nascent population may be entirely in the range where v is greater than zero. The branching ratio between the O2(+) + CO and the CO2(+) + O product channels is also measured as a function of ion-drift velocity. The implications of these experiments for terrestrial releases of CO2 into the ionosphere and for the ionospheres of Mars and Venus are considered.

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