METHODOLOGICAL NOTES

The role of nonquasineutrality in instable plasma oscillations

B. N. Shvilkin

Lomonosov Moscow State University, Faculty of Physics

Abstract: Nonquasineutrality in perturbations has a destabilising influence on a plasma which is not in thermodynamic equilibrium and has a density gradient across a homogeneous axial magnetic field. This destabilising effect applies not only to short but also to long drift—dissipative instability waves. If long drift waves are excited, nonquasineutrality can also destabilise a plasma simultaneously with ion inertia. In strong magnetic fields the absence of quasineutrality of perturbations is important even when the density of charged particles is high.

PACS: 52.35.Qz, 52.35.Kt

Received: May 1, 1994

DOI: 10.3367/UFNr.0164.199406f.0651

 English version: Physics–Uspekhi, 1994, 37:6, 607–608

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