Absolute instability of a current-carrying, weakly nonuniform plasma

Details Absolute instability of a current-carrying, weakly nonuniform plasma Absolute instability of a current-carrying, weakly nonuniform plasma

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phys...25..493w&link_type=abstract

Physica Scripta, vol. 25, no. 3, Mar. 1982, p. 493-495.

Physics

Plasma Physics

Electron Distribution, Magnetohydrodynamic Stability, Nonuniform Plasmas, Plasma Currents, Plasma Dynamics, Cosmology, Plasma Drift, Plasma Layers, Plasma Oscillations, Plasma Physics

Scientific paper

The paper shows the existence of a new instability mechanism of a current-carrying plasma, which, for a sufficiently long system, may occur after saturation of the two-stream instability. The instability is due to combined asymmetry and nonuniformity of the electron distribution and is manifested by the spontaneous appearance of a growing, localized Langmuir oscillation at approximately the position where electron drift and thermal velocities are equal. A possible connection with the formation of double layers is pointed out.

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