Effects of a sheared ion velocity on the linear stability of ITG modes

Journal Article · Thu Nov 30 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2404573· OSTI ID:20895146

Lontano, M; Lazzaro, E ^[1]; Varischetti, M C ^[1]

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1. Istituto di Fisica del Plasma, C.N.R., Euratom-ENEA-CNR Association, Milan (Italy)

The linear dispersion of the ion temperature gradient (ITG) modes, in the presence of a non uniform background ion velocity U(parallel sign) U(parallel sign)(x) ez, in the direction of the sheared equilibrium magnetic field B0 = B0(x) ez, has been studied in the frame of the two-fluid guiding center approximation, in slab geometry. Generally speaking, the presence of an ion flow destabilizes the oscillations. The role of the excited K-H instability is discussed.

• OSTI ID: 20895146
• Journal Information: AIP Conference Proceedings, Vol. 871, Issue 1; Conference: Joint Varenna-Lausanne international workshop on theory of fusion plasmas, Varenna (Italy), 28 Aug - 1 Sep 2006; Other Information: DOI: 10.1063/1.2404573; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
GEOMETRY
GUIDING-CENTER APPROXIMATION
ION TEMPERATURE
MAGNETIC FIELDS
OSCILLATIONS
PLASMA INSTABILITY
TEMPERATURE GRADIENTS