Drift Wave Turbulence
- Institute for Fusion Studies, University of Texas at Austin (United States)
- Ecole Polytechnique Federale de Lausanne, Centre de Recherches en Physique des Plasmas Association Euratom-Confederation Suisse, CH-1015 Lausanne (Switzerland)
- Assoc. Euratom-CEA, CEA/DSM/DRFC Cadarache, 13108 St Paul-Lez-Durance (France)
- National Institute for Fusion Science/Graduate University for Advanced Studies (Japan)
Drift waves occur universally in magnetized plasmas producing the dominant mechanism for transport of particles, energy and momentum across magnetic field lines. A wealth of information obtained from laboratory experiments for plasma confinement is reviewed for drift waves driven unstable by density gradients, temperature gradients and trapped particle effects. The modern understanding of origin of the scaling laws for Bohm and gyro-Bohm transport fluxes is discussed. The role of sheared flows and magnetic shear in reducing the transport fluxes is discussed and illustrated with large scale computer simulations. Plasmas turbulence models are derived with reduced magnetized fluid descriptions. The types of theoretical descriptions reviewed include weak turbulence theory and anisotropic Kolmogorov-like spectral indices, and the mixing length. A number of standard turbulent diffusivity formulas are given for the various space-time scales of the drift-wave turbulent mixing.
- OSTI ID:
- 21143422
- Journal Information:
- AIP Conference Proceedings, Vol. 1013, Issue 1; Conference: 1. ITER international summer school on turbulent transport in fusion plasmas, Aix en Provence (France), 16-20 Jul 2007; Other Information: DOI: 10.1063/1.2939032; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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