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Title: Alfven wave dispersion behavior in single- and multicomponent plasmas

Dispersion relations of driven Alfven waves (AWs) are measured in single- and multicomponent plasmas consisting of mixtures of argon, helium, and oxygen in a magnetized linear cylindrical plasma device VINETA [C. Franck, O. Grulke, and T. Klinger, Phys. Plasmas 9, 3254 (2002)]. The decomposition of the measured three-dimensional magnetic field fluctuations and the corresponding parallel current pattern reveals that the wave field is a superposition of L- and R-wave components. The dispersion relation measurements agree well with calculations based on a multifluid Hall-magnetohydrodynamic model if the plasma resistivity is correctly taken into account.
Authors:
; ;  [1] ;  [2] ;  [1] ;  [3]
  1. MPI for Plasma Physics, EURATOM Association, 17491 Greifswald (Germany)
  2. (Germany)
  3. University of Alberta-Edmonton, Alberta, T6G 2H1 (Canada)
Publication Date:
OSTI Identifier:
21347152
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 17; Journal Issue: 3; Other Information: DOI: 10.1063/1.3322852; (c) 2010 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALFVEN WAVES; ARGON; DISPERSION RELATIONS; FLUCTUATIONS; HELIUM; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; MIXTURES; OXYGEN; PLASMA; THREE-DIMENSIONAL CALCULATIONS DISPERSIONS; ELEMENTS; FLUID MECHANICS; FLUIDS; GASES; HYDRODYNAMICS; HYDROMAGNETIC WAVES; MECHANICS; NONMETALS; RARE GASES; VARIATIONS