Simultaneous excitation of broadband electrostatic noise and electron cyclotron waves in the plasma sheet

Details Simultaneous excitation of broadband electrostatic noise and electron cyclotron waves in the plasma sheet Simultaneous excitation of broadband electrostatic noise and electron cyclotron waves in the plasma sheet

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..729b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, April 1991, p. 729-732.

Physics

7

Electron Cyclotron Heating, Electrostatic Waves, Ion Beams, Plasma Layers, Wave Excitation, Boundary Layers, Electron Beams, Harmonic Radiation, Plasma Diagnostics

Scientific paper

Electron cyclotron harmonics and broadband electrostatic noise (BEN) are often observed in the earth's outer plasma sheet. While it is well known that ion beams in the plasma sheet boundary layer can generate BEN, new two-dimensional electrostatic simulations show that field-aligned ion beams with a small perpendicular ring distribution can drive not only BEN, but also electron cyclotron harmonic (ECH) waves simultaneously. Simulation results are presented here using detailed diagnostics of wave properties, including dispersion relations of all wave modes.

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