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Electromagnetic global gyrokinetic simulation of shear Alfven wave dynamics in tokamak plasmas

Phys. Plasmas 14, 042503 (2007); doi:10.1063/1.2718908

Published 12 April 2007

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Y. Nishimura and Z. Lin
Department of Physics and Astronomy, University of California, Irvine, California 92697

W. X. Wang
Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543
Electromagnetic gyrokinetic simulation in toroidal geometry is developed based on a fluid-kinetic hybrid electron model. The Alfven wave propagation in a fully global gyrokinetic particle simulation is investigated. In the long-wavelength magnetohydrodynamic limit, shear Alfven wave oscillations, continuum damping, and the appearance of the frequency gap in toroidal geometries are demonstrated. Wave propagation across the magnetic field (kinetic Alfven wave) is examined by comparing the simulation results with the theoretical dispersion relation. Furthermore, finite-beta stabilization of the ion temperature gradient mode and the onset of the kinetic ballooning mode are demonstrated. ©2007 American Institute of Physics
History: Received 10 November 2006; accepted 26 February 2007; published 12 April 2007
Permalink: http://link.aip.org/link/?PHPAEN/14/042503/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.30.Gz
    Gyrokinetics in plasmas
  • 52.35.Ra
    Plasma turbulence
  • 52.65.Cc
    Particle orbit and trajectory (plasma simulation)
  • YEAR: 2007

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ISSN:
1070-664X (print)   1089-7674 (online)
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