https://doi.org/10.1140/epjd/e2002-00195-x
Generation of zonal flows by interchange modes in a plasma
1
Institut für Theoretische Physik IV,
Fakultät für Physik und Astronomie,
Ruhr-Universität Bochum, 44780 Bochum, Germany
2
Department of Plasma Physics, Umeå University,
90187 Umeå, Sweden
Corresponding author: a ps@tp4.ruhr-uni-bochum.de
Received:
26
July
2002
Published online:
24
September
2002
The generation of zonal flows by flute-like interchange modes in a nonuniform magnetoplasma is considered. The guiding center particle drifts are then used to derive a system of coupled mode equations. The latter are Fourier analyzed to obtain a nonlinear dispersion relation, which exhibits the excitation of zonal flows by the ponderomotive force of the interchange modes. The growth rate of the parametrically driven zonal flows is obtained.
PACS: 52.25.Vy – Impurities in plasmas / 52.35.Mw – Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.) / 52.35.Ra – Plasma turbulence
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
