Analysis of diffusion processes in the daytime ionosphere of Venus according to Venera-9, 10 radio occultation data

Details Analysis of diffusion processes in the daytime ionosphere of Venus according to Venera-9, 10 radio occultation data Analysis of diffusion processes in the daytime ionosphere of Venus according to Venera-9, 10 radio occultation data

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983kosis..21..737g&link_type=abstract

Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 21, Sept.-Oct. 1983, p. 737-745. In Russian.

Physics

Atmospheric Diffusion, Daytime, Ionospheric Electron Density, Planetary Ionospheres, Venera Satellites, Venus Atmosphere, Vertical Distribution, Ionospheric Ion Density, Photochemical Reactions, Venera 10 Satellite, Venera 9 Satellite

Scientific paper

It is shown that the main features of the vertical profiles of electron density in the daytime Venusian ionosphere, acquired by the two-frequency radio occultation technique, can be explained on the basis of photochemical processes and the vertical diffusion of O(+) and O2(+) ions. The appearance of an upper maximum at a height of 190 km on experimental N(h) profiles at small solar zenith angles can be explained by low ion and electron temperatures; at h = 190 km, Ti = 300 K and Te = 1000 K. The rapid decrease of electron density in the upper daytime ionosphere at solar zenith angles not exceeding 63 deg is determined by considerable vertical gradients of plasma temperature. At heights of 200-250 km the electron temperature increases to 1000-10,000 K.

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