On radial geodesic forcing of zonal modes

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3603838· OSTI ID:22046876

Kendl, A ^[1]

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1. Institute for Ion Physics and Applied Physics, Association Euratom-OeAW, University of Innsbruck, A-6020 Innsbruck (Austria)

The elementary local and global influence of geodesic field line curvature on radial dispersion of zonal modes in magnetised plasmas is analysed with a primitive drift wave turbulence model. A net radial geodesic forcing of zonal flows and geodesic acoustic modes can not be expected in any closed toroidal magnetic confinement configuration, since the flux surface average of geodesic curvature identically vanishes. Radial motion of poloidally elongated zonal jets may occur in the presence of geodesic acoustic mode activity. Phenomenologically a radial propagation of zonal modes shows some characteristics of a classical analogon to second sound in quantum condensates.

• OSTI ID: 22046876
• Journal Information: Physics of Plasmas, Vol. 18, Issue 7; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DIFFERENTIAL GEOMETRY
MAGNETIC CONFINEMENT
MAGNETIC SURFACES
MAGNETOHYDRODYNAMICS
PLASMA
PLASMA DRIFT
PLASMA INSTABILITY
PLASMA JETS
PLASMA SIMULATION
SECOND SOUND
TURBULENCE
WAVE PROPAGATION