Ionospheric photoelectrons at Venus: Initial observations by ASPERA-4 ELS

Coates, A. J. and Frahm, R.A. and Linder, David and Kataria, Dhiren and Soobiah, Yasir (2008) Ionospheric photoelectrons at Venus: Initial observations by ASPERA-4 ELS. Planetary and Space Science, 56 (6). pp. 802-806. ISSN 0032-0633

Full text not available from this repository.

Abstract

We report the detection of electrons due to photo-ionization of atomic oxygen and carbon dioxide in the Venus atmosphere by solar helium 30.4 nm photons. The detection was by the Analyzer of Space Plasma and Energetic Atoms (ASPERA-4) Electron Spectrometer (ELS) on the Venus Express (VEx) European Space Agency (ESA) mission. Characteristic peaks in energy for such photoelectrons have been predicted by Venus atmosphere/ionosphere models. The ELS energy resolution (ΔE/E~7%) means that these are the first detailed measurements of such electrons. Considerations of ion production and transport in the atmosphere of Venus suggest that the observed photoelectron peaks are due primarily to ionization of atomic oxygen

Item Type:
Journal Article
Journal or Publication Title:
Planetary and Space Science
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900/1912
Subjects:
ID Code:
63255
Deposited By:
Deposited On:
05 Apr 2013 10:28
Refereed?:
Yes
Published?:
Published
Last Modified:
12 Aug 2020 02:51