Particle simulations of electrostatic emissions near the lower hybrid frequency

Details Particle simulations of electrostatic emissions near the lower hybrid frequency Particle simulations of electrostatic emissions near the lower hybrid frequency

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..483r&link_type=abstract

Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 483-488.

Physics

16

Auroral Zones, Electrostatic Waves, Ion Cyclotron Radiation, Ionospheric Propagation, Ionospherics, Plasma Frequencies, Cold Plasmas, Computerized Simulation, Conics, Hiss, Ionospheric Ion Density, Magnetohydrodynamic Stability, Maxwell-Boltzmann Density Function, Plasma Spectra, Propagation Modes, Toroidal Plasmas, Trapping

Scientific paper

The linear instability and nonlinear saturation of electrostatic emission near the lower hybrid frequency is examined for model cold and warm ion ring distributions and auroral zone parameters. In the cold ring case, a single coherent mode near omega (LH) evolves, and saturates by ion trapping. In the warm ring case, a discrete spectrum of unstable modes separated by the ion gyrofrequency is generated near and above omega (LH). The latter instability saturates by quasilinear diffusion.

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