Effects of anisotropic [eta][sub [ital i]] and collisions on the mixed slab and toroidal ITG mode

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860669· OSTI ID:6323927

Song, H; Sen, A K ^[1]

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1. Plasma Physics Laboratory, Columbia University, New York, New York, 10027 (United States)

The effects of collisions and anisotropy in the ion temperature gradient on the ion-temperature-gradient-driven (ITG) mode are investigated with dissipative trapped electrons and fully kinetic ions, in the presence of both transit and magnetic drift resonances. For the slab and toroidal modes, electron collisions stabilize the ion branch but destabilize the electron branch. For the mixed slab and toroidal mode, a coupling effect is found that causes a split of the stability region in the [eta][sub [ital i][parallel]]-[eta][sub [ital i][perpendicular]] plane. A second stability region at large [eta][sub [ital i][perpendicular]] with electron collisions may provide a possible stabilization scheme for ITG instabilities.

• DOE Contract Number: FG02-87ER53257
• OSTI ID: 6323927
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:8; ISSN PFBPEI; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ANISOTROPY
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
COLLISIONS
CONFIGURATION
ELECTRON COLLISIONS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INSTABILITY
ION TEMPERATURE
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
SLABS
SPACE
STABILIZATION
TEMPERATURE GRADIENTS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRAPPED ELECTRONS