Collisional drift wave description of plasma edge turbulence

Journal Article · Wed Feb 29 23:00:00 EST 1984 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.864660· OSTI ID:5117299

Wakatani, M; Hasegawa, A

Model mode-coupling equations for the resistive drift wave instability are numerically solved for realistic parameters found in tokamak edge plasmas. The Bohm diffusion is found to result if the parallel wavenumber is chosen to maximize the growth rate for a given value of the perpendicular wavenumber. The saturated turbulence energy has a broad frequency spectrum with a large fluctuation level proportional to kappa-bar ( = rho/sub s//L/sub n/, the normalized inverse scale length of the density gradient) and a wavenumber spectrum of the two-dimensional Kolmogorov--Kraichnan type, approx.k/sup -3/.

• Research Organization: Plasma Physics Laboratory, Kyoto University, Uji 611, Japan
• OSTI ID: 5117299
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 27:3; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
BOUNDARY LAYERS
CHARGED PARTICLES
CLOSED PLASMA DEVICES
COLLISIONS
COUPLING
DAMPING
DIFFUSION
DRIFT INSTABILITY
ELECTRON COLLISIONS
EQUATIONS
FLUCTUATIONS
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
INSTABILITY GROWTH RATES
IONS
LANDAU DAMPING
LAYERS
MAGNETOHYDRODYNAMICS
MECHANICS
NUMERICAL SOLUTION
OSCILLATION MODES
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA SCRAPE-OFF LAYER
PLASMA SHEATH
SATURATION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TURBULENCE
VARIATIONS
VORTICES