Simulation studies of plasma waves in the electron foreshock - The transition from reactive to kinetic instability

Details Simulation studies of plasma waves in the electron foreshock - The transition from reactive to kinetic instability Simulation studies of plasma waves in the electron foreshock - The transition from reactive to kinetic instability

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.8111d&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, June 1, 1990, p. 8111-8122. Research supported by USAF.

Physics

27

Electron Distribution, Magnetohydrodynamic Stability, Plasma Waves, Plasma-Particle Interactions, Simulation, Space Plasmas, Coupled Modes, Mathematical Models

Scientific paper

Particle simulation experiments were used to analyze the electron beam-plasma instability. It is shown that there is a transition from the reactive state of the electron beam-plasma instability to the kinetic instability of Langmuir waves. Quantitative tests, which include an evaluation of the dispersion relation for the evolving non-Maxwellian beam distribution, show that a quasi-linear theory describes the onset of this transition and applies again fully to the kinetic stage. This stage is practically identical to the late stage seen in simulations of plasma waves in the electron foreshock described by Dum (1990).

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