Unified formalism of lower hybrid parametric instabilities in plasmas

Journal Article · Thu Sep 01 04:00:00 EDT 1977 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862052· OSTI ID:7096948

Tripathi, V K; Grebogi, C; Liu, C S

A unified theory of parametric instabilities in the lower hybrid frequency region is formulated using the drift kinetic equation for electrons and the Vlasov equation for unmagnetized ions. The three wave decay process into various decay channels (viz., two lower hybrid waves, lower hybrid and ion acoustic waves) are examined and compared for various pump frequencies and powers. Nonlinear scattering rates by electrons and ions (i.e., nonlinear Landau damping) are evaluated and compared with previous calculations. It is seen that the dominant channel of decay is through ion acoustic and lower hybrid waves when T/sub e//2T/sub i/>4 and through lower hybrid waves and lower hybrid quasi-modes when T/sub e//2T/sub i/<4.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 7096948
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 20:9; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
BOLTZMANN-VLASOV EQUATION
DAMPING
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
EQUATIONS
HOMOGENEOUS PLASMA
INSTABILITY
KINETIC EQUATIONS
LANDAU DAMPING
MAGNETIC FIELDS
PARAMETRIC INSTABILITIES
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES