Small-scale drift-Alfven wave driven zonal flows in plasmas
- Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China) and I. Vekua Institute of Applied Mathematics of Tbilisi State University, 2 University Str., 0143 Tbilisi (Georgia)
The problem of generation of zonal flows by small-scale drift-Alfven waves is illuminated more completely. The growth rate of zonal-flow instabilities much greater than known by previous investigations is obtained. Dependence of the growth rate on the spectrum purity of the wave packet is also investigated. It is shown that the sufficient broadening of the wave packet gives resonant-type instability with the growth rate of the order of hydrodynamic one. The appropriate conditions for instabilities are determined.
- OSTI ID:
- 20974877
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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