Excitation of zonal flow by the modulational instability in electron temperature gradient driven turbulence
Plasma Physics
2015-06-26 v1
Abstract
The generation of large-scale zonal flows by small-scale electrostatic drift waves in electron temperature gradient(ETG) driven turbulence model is considered. The generation mechanism is based on the modulational instability of a finite amplitude monochromatic drift wave. The threshold and growth rate of the instability as well as the optimal spatial scale of zonal flow are obtained.
Keywords
Cite
@article{arxiv.physics/0703050,
title = {Excitation of zonal flow by the modulational instability in electron temperature gradient driven turbulence},
author = {Yu. A. Zaliznyak and A. I. Yakimenko and V. M. Lashkin},
journal= {arXiv preprint arXiv:physics/0703050},
year = {2015}
}
Comments
10 pages, 3 figures