Nonlinear generation of zonal flows by ion-acoustic waves in a uniform magnetoplasma |
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| Authors: | Nitin Shukla P.K. Shukla |
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| Affiliation: | a Department of Physics, Umeå University, SE-90187 Umeå, Sweden
b Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany |
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| Abstract: | It is shown that large-scale zonal flows (ZFs) can be excited by Reynolds stress of nonlinearly interacting random phase ion-acoustic waves (EIAWs) in a uniform magnetoplasma. Since ZFs are associated with poloidal sheared flows, they can tear apart short scale EIAW turbulence eddies, and hence contribute to the reduction of the cross-field turbulent transport in a magnetized plasma. |
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| Keywords: | 52.35.Xz 52.35.Fp 52.35.Mw 52.35.Qz |
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