Control of plasma waves associated with the Space Shuttle by the angle between the orbiter's velocity vector and the magnetic field

Details Control of plasma waves associated with the Space Shuttle by the angle between the orbiter's velocity vector and the magnetic field Control of plasma waves associated with the Space Shuttle by the angle between the orbiter's velocity vector and the magnetic field

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.7591c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, May 1, 1991, p. 7591-7601.

Physics

18

Aerospace Environments, Charge Exchange, Earth Ionosphere, Energetic Particles, Plasma Waves, Space Shuttles, Doppler Effect, Ionospheric Ion Density, Magnetic Field Configurations, Oxygen Ions, Water Vapor

Scientific paper

Plasma measurements on several Space Shuttle missions indicated presence of an active and complex plasma wave environment. Using data obtained during the free-flight portion of the Spacelab 2 mission, it is shown that the amplitude and the spectral character of some of these waves are controlled by the angle between the magnetic field and the Shuttle's velocity vector V(T) relative to the ionospheric plasma, the so-called V-parallel/V(T) effect. A linear theory is developed in which the waves are Doppler-shifted lower hybrid waves driven by pickup instabilities involving ring- or beamlike distributions of water ions. Implications of these results for future Shuttle missions and orbiting platforms subject to outgassing of water are discussed.

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