Reaction paths leading from O2/+/ to water clusters under cold mesospheric conditions

Details Reaction paths leading from O2/+/ to water clusters under cold mesospheric conditions Reaction paths leading from O2/+/ to water clusters under cold mesospheric conditions

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982p%26ss...30..559m&link_type=abstract

Planetary and Space Science, vol. 30, June 1982, p. 559-573.

Physics

5

Atmospheric Chemistry, Chemical Reactions, D Region, Mesosphere, Oxygen Ions, Positive Ions, Atmospheric Temperature, Graph Theory, Ionospheric Ion Density, Ligands, Reaction Kinetics, Water

Scientific paper

Reference is made to reported D-region positive ion measurements (Arnold and Krankowsky, 1974) in which a number of new cluster ions of minor abundance were apparent. It is noted that these ions, which were attributed to clusters with N2, O2, and CO2 ligands, were observable owing to enhanced O2(+) production and the low temperatures during the flight. Consideration is given here to these in situ ion data in view of recent laboratory ion-molecule reaction experiments that shed light on the mechanism leading from O2(+) to water clusters in air mixtures. Possible intermediates are discussed in terms of ion stability and the existence of effective reaction paths under the given atmospheric conditions. The intermediates proposed here are then fitted into a coherent reaction mechanism resulting in significant new pathways for the formation of protonated water clusters. A semiquantitative measure of the importance of each of the pathways is then calculated using signal flow graph theory.

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