Generation of zonal flows by interchange modes in a plasma |
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| Authors: | P.K. Shukla L. Stenflo |
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| Affiliation: | Institut für Theoretische Physik IV, Fakult?t für Physik und Astronomie, Ruhr-Universit?t Bochum, 44780 Bochum, Germany, DE
Department of Plasma Physics, Ume? University, 90187 Ume?, Sweden, SE
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| Abstract: | 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. Received 26 July 2002 Published online 24 September 2002 RID="a" ID="a"e-mail: ps@tp4.ruhr-uni-bochum.de |
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| Keywords: | PACS. 52.25.Vy Impurities in plasmas – 52.35.Mw Nonlinear phenomena: waves, wave propagation, aaand other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.) – 52.35.Ra Plasma turbulence |
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