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Title: On radial geodesic forcing of zonal modes

Abstract

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.

Authors:
 [1]
  1. Institute for Ion Physics and Applied Physics, Association Euratom-OeAW, University of Innsbruck, A-6020 Innsbruck (Austria)
Publication Date:
OSTI Identifier:
22046876
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 18; Journal Issue: 7; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Kendl, A. On radial geodesic forcing of zonal modes. United States: N. p., 2011. Web. doi:10.1063/1.3603838.
Kendl, A. On radial geodesic forcing of zonal modes. United States. doi:10.1063/1.3603838.
Kendl, A. Fri . "On radial geodesic forcing of zonal modes". United States. doi:10.1063/1.3603838.
@article{osti_22046876,
title = {On radial geodesic forcing of zonal modes},
author = {Kendl, A.},
abstractNote = {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.},
doi = {10.1063/1.3603838},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 7,
volume = 18,
place = {United States},
year = {2011},
month = {7}
}