Physics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3645k&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A3, p. 3645-3658.
Physics
4
Ion Temperature, Planetary Ionospheres, Solar Planetary Interactions, Venus Atmosphere, Wave-Particle Interactions, Cold Plasmas, Solar Wind, Venus, Ionosphere, Ions, Models, Simulations, Dayside, Parameters, Scattering, Trajectory, Pressure, Calculations, Solar Wind, Distance, Interaction, Distribution, Ionopause, Altitude, Waves, Particles, Density, Collisions, Oxygen, Flux, Production Rate, Pvo Mission, Energy, Spacecraft Observations, Onms Instrument, Oetp Instrument, Oims Instrument, Oefd Instrument
Scientific paper
A model is presented that simulates the behavior of superthermal ions previously reported in the dayside ionosphere of Venus. The model considers effects of ExB and gradient drifts, charge exchange and collisions with the ambient neutral atmosphere and the possible effects of a wave-particle (anomalous) scattering process. Results indicate that scattering processes are required if superthermal ions are the explanation for the observed 'missing pressure' component in the day-side Venus ionosphere. The scattering scale length required to match the 'missing pressure' distribution is similar to the scale length previously predicted for growth of a lower hybrid beam instability.
Cloutier Paul A.
Kramer Laurence
Taylor Harry A.
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