Physics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981kosis..19..733i&link_type=abstract
Kosmicheskie Issledovaniia, vol. 19, Sept.-Oct. 1981, p. 733-748. In Russian.
Physics
2
Atmospheric Models, Daytime, Ionospheric Composition, Ionospheric Ion Density, Planetary Composition, Planetary Ionospheres, Venus Atmosphere, Atmospheric Chemistry, Ionospheric Electron Density, Solar Activity Effects, Upper Ionosphere
Scientific paper
The paper develops a model of the ionic composition of the daytime ionosphere of Venus in the 100-220 km height range; the model includes O2(+), CO2(+), O(+), He(+), H(+), N(+), CO(+), C(+), CO2H(+), HCO(+), NO(+), and N2(+) ions, as well as electrons; and is based on the most complete scheme of physico-chemical processes. In the main ionospheric maximum (at 139-146 km), electron concentration varies within (3-11) x 10 to the 5th per cu cm, increasing by a factor of 2 with increasing solar activity from the minimum to the maximum, and varying from the subsolar point to the terminator also by a factor of 2. The relative role of 64 reactions in the photochemical balance is investigated. The content of H, H2, NO, and C in the upper atmosphere is estimated; and it is shown that H2 has a determining influence on the height of the upper maximum and the electron concentration in the maximum through the rapid reaction C(+) + H2 yields H + OH(+).
Izakov Mai N.
Krasitskii O. P.
Pavlov A. V.
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