Electron Temperature Gradient Turbulence

Journal Article · Mon Dec 25 04:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.85.5579· OSTI ID:40205939

Dorland, W; Jenko, F; Kotschenreuther, M; Rogers, B N

The first toroidal, gyrokinetic, electromagnetic simulations of small scale plasma turbulence are presented. The turbulence considered is driven by gradients in the electron temperature. It is found that electron temperature gradient (ETG) turbulence can induce experimentally relevant thermal losses in magnetic confinement fusion devices. For typical tokamak parameters, the transport is essentially electrostatic in character. The simulation results are qualitatively consistent with a model that balances linear and secondary mode growth rates. Significant streamer-dominated transport at long wavelengths occurs because the secondary modes that produce saturation become weak in the ETG limit.

• Sponsoring Organization: (US)
• OSTI ID: 40205939
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 85; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
ELECTROSTATICS
MAGNETIC CONFINEMENT
PLASMA
SATURATION
SIMULATION
TRANSPORT
TURBULENCE
WAVELENGTHS