J. Phys. Colloques
Volume 40, Numéro C7, Juillet 1979XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
|Page(s)||C7-21 - C7-35|
J. Phys. Colloques 40 (1979) C7-21-C7-35
Ionic reactions in the laboratory and in planetary atmospheresH. S. W. Massey et F. R. S.
Department of Physics and Astronomy, University College London, U.K.
A detailed understanding of the ionospheres of the Earth and planets requires knowledge of the rates of many ionic reactions as well as of electron recombination coefficients and photoionization cross sections. These must be obtained primarily by laboratory measurements but it is often difficult to provide data applicable under the atmospheric conditions, especially of translational and vibrational temperature. An account is given of the present situation for the main terrestrial ionosphere taking account of the availability of extensive data from the Atmospheric Explorer satellites, for the ionospheres of Venus and Mars in the light of recent data obtained with planetary probes and for the lower ionosphere of the Earth taking account of rocket data.