Excitation of lower-hybrid instability by longitudinal currents
- 1 January 1986
- journal article
- letter
- Published by AIP Publishing in Physics of Fluids
- Vol. 29 (1) , 336
- https://doi.org/10.1063/1.865948
Abstract
The stability of a homogeneous plasma with currents along the magnetic field is investigated. It is found that electrons streaming along the magnetic field lines in a neutralizing positive ion background could excite lower‐hybrid instability. The critical drift velocity should exceed the parallel phase velocity for instability: Vd>ωr/k∥, where ωr is the lower‐hybrid frequency (ΩeΩi)1/2. This condition is found to be easily met in the laboratory and space plasmas and is applicable both in the collisionless and collisional palsmas.Keywords
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