Physics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.1609r&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, Feb. 1, 1986, p. 1609-1618.
Physics
88
Auroral Zones, Ions, Particle Acceleration, Plasma-Particle Interactions, Space Plasmas, Very Low Frequencies, Coupled Modes, Electron Beams, Simulation, Wave Propagation
Scientific paper
In an effort to describe ion-conic acceleration, particle plasma simulation is used to study the generation of VLF waves below field-aligned potential drops and the effect of the resulting turbulence on the ion population in the suprauroral region. To model the situation, a weak, energetic electron beam traveling along the magnetic field is allowed to destabilize a cool electron-ion plasma. To describe the ion acceleration observed in the simulation, a theoretical model is developed using mode-mode coupling processes to generate the low phase velocity VLF waves with which the ions first interact. By scaling the simulation results to suprauroral conditions, it is demonstrated that the VLF turbulence generated below field-aligned potential drops can account for the acceleration of ions observed in energetic ion conic distributions.
Chang Tsao
Jasperse John R.
Retterer John M.
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