Model calculations of nightside ionosphere of Venus-Ionic composition

Haider, S. A. (1988) Model calculations of nightside ionosphere of Venus-Ionic composition Indian Journal of Radio and Space Physics, 17 . pp. 183-187. ISSN 0367-8393

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Model calculations of nightside ion and electron densities have been carried out for the ionosphere of Venus and compared with the results obtained from Pioneer Venus ion mass spectrometer and Venera 9 and 10 radio occultation measurements. The generalized yield spectrum approach has been used for the calculation of ion production rates in the ionosphere of Venus by using measured Venera 9 electron fluxes. Coupled continuity equations for ionic species CO2(+), CO(+), H(+), NO(+), C(+), N2(+), N(+), He(+), O(+) and O2(+) have been solved by assuming photochemical steady state conditions. The results obtained for electron density show good agreement with the measured densities obtained by PVO mass spectrometer. However, at higher altitudes the present results are about a factor two less than the results reported by Venera 9 and 10 measurements. The electron density at the layer peak calculated in the present work is 10,000/cu cm, a value comparable to that reported by Venera 9 and 10 measurements during solar cycle minimum.

Item Type:Article
Source:Copyright of this article belongs to National Institute of Science Communication and Information Resources.
Keywords:Ionospheric Electron Density; Ionospheric Ion Density; Night Sky; Pioneer Space Probes; Venera Satellites; Venus Atmosphere; Carbon Dioxide; Electron Density Profiles; Ion Production Rates; Ionopause; Mass Spectrometers; Oxygen Ions; Venera 10 Satellite; Venera 9 Satellite
ID Code:63300
Deposited On:28 Sep 2011 10:40
Last Modified:28 Sep 2011 10:40

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