Generalized lower-hybrid-drift instability

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862810· OSTI ID:6044595

Hsia, J B; Chiu, S M; Hsia, M F; Chou, R L; Wu, C S

The theory of lower-hybrid-drift instability is extended to include a finite k/sub parallel/ (the component of wave vector k parallel to the ambient magnetic field B/sub 0/) so that the analysis bridges the usual lower-hybrid-drift instability of flute modes and the modified-two-stream instability. The present theory also includes electromagnetic and ambient magnetic field-gradient effects. It is found that in the cold-electron limit the density and magnetic gradients can qualitatively modify the conclusion obtained in the early theory of the modified-two-stream instability. For example, even if the relative drift far exceeds the Alfven speed of the plasma, the instability may still persist. This result is in contrast to that established in the literature. When the electron temperature is finite, the problem is complicated. Numerical solutions are obtained for a number of cases. Results indicate that when k/sub parallel/not =0, the growth rate is not always reduced.

• Research Organization: The Southwestern Institute of Physics, Leshan, Sichuan, The People's Republic of China
• OSTI ID: 6044595
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 22:9; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BOLTZMANN-VLASOV EQUATION
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTRON TEMPERATURE
EQUATIONS
INHOMOGENEOUS PLASMA
INSTABILITY
ION TEMPERATURE
MAGNETIC FIELDS
MAXWELL EQUATIONS
NUMERICAL SOLUTION
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
TWO-STREAM INSTABILITY