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Ann. Geophys., 26, 1829-1836, 2008
www.ann-geophys.net/26/1829/2008/
© European Geosciences Union 2008
Radiation by energetic electrons accelerated by wave-particle interaction: a plausible mechanism for x-ray emission from the Venus mantle
R. Bingham1,2, K. B. Quest3, V. D. Shapiro4, and B. J. Kellett1
1STFC Rutherford Appleton Lab., Space Science & Technology Dept., Didcot, Oxon., OX11 0QX, UK
2The Physics Department, University of Strathclyde, Glasgow, G4 0NG, Scotland UK
3ECE Department, Univ. of California, San Diego, La Jolla, CA 92093/0407, USA
4Physics Department, Univ. of California, San Diego,La Jolla, CA 92093/0319, USA
Abstract. In this paper it is argued that recently observed x-ray emission
from non-magnetic planets (Dennerl et al., 2002) can be explained
as a combination of bremsstrahlung and line K-shell radiation
produced by the interaction of energetic electrons with the
neutral atmosphere. Numerical simulations show that the modified two stream
instability can generate energetic 100 eV electrons that are observed and these electrons can produce x-ray emission.
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