Linear studies of m =1 modes in high-temperature plasmas with a four-field model

Journal Article · Fri Nov 01 00:00:00 EST 1991 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859780· OSTI ID:5018745

Aydemir, A Y ^[1]

---

1. Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas (USA)

The {ital m}=1 mode in high temperature plasmas is examined using a simple four-field model of tokamak dynamics derived by Hazeltine {ital et} {ital al}. (Phys. Fluids {bold 30}, 3204 (1987)). It is shown that, despite its simplicity, the model reproduces with remarkable accuracy results obtained with more sophisticated kinetic treatments in various collisionality regimes. The effects of parallel compressibility on the {ital m}=1 mode in the collisional, semicollisional, and collisionless regimes are also discussed. Coupling to the ion sound waves is found to be weakly destabilizing in the collisional regime, and stabilizing in the semicollisional and collisionless regimes.

• DOE Contract Number: FG05-80ET53088
• OSTI ID: 5018745
• Journal Information: Physics of Fluids B; (United States), Vol. 3:11; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA MACROINSTABILITIES
COLLISIONAL PLASMA
COLLISIONLESS PLASMA
DISPERSION RELATIONS
ELECTRON DRIFT
ELECTRON TEMPERATURE
HIGH TEMPERATURE
ION DRIFT
KINK INSTABILITY
MAGNETOHYDRODYNAMICS
OSCILLATIONS
SOUND WAVES
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
MECHANICS
PLASMA
PLASMA INSTABILITY
700107* - Fusion Energy- Plasma Research- Instabilities