Renormalized theory of the ion cyclotron turbulence in magnetic field-aligned plasma shear flow

被引：3
|
作者：
Mikhailenko, V. S. [1 ,2 ]
Mikhailenko, V. V. [1 ,2 ]
Stepanov, K. N. [1 ,2 ]
Azarenkov, N. A. [1 ]
机构：
[1] Kharkov Natl Univ, UA-61108 Kharkov, Ukraine
[2] Kharkov Phys & Technol Inst, Natl Sci Ctr, UA-61108 Kharkov, Ukraine
来源：
PHYSICS OF PLASMAS | 2009年 / 16卷 / 01期
关键词：
cyclotron resonance; nonlinear equations; plasma flow; plasma instability; plasma nonlinear processes; plasma turbulence; renormalisation; shear flow; HYDROGEN CYCLOTRON; ELECTRON-BEAMS; WAVES; INSTABILITIES; DRIVEN; OSCILLATIONS; IONOSPHERE; GRADIENTS; DIFFUSION; REGIONS;
D O I：
10.1063/1.3063061
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The analytical treatment of nonlinear evolution of the shear-flow-modified current driven ion cyclotron instability and shear-flow-driven ion cyclotron kinetic instabilities of magnetic field-aligned plasma shear flow is presented. Analysis is performed on the base of the nonlinear dispersion equation, which accounts for a new combined effect of plasma turbulence and shear flow. It consists of turbulent scattering of ions across the shear flow with their convection by shear flow and results in enhanced nonlinear broadening of ion cyclotron resonances. This effect is found to lead to the saturation of ion cyclotron instabilities as well as to the development of nonlinear shear flow driven ion cyclotron instability.
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页数：12
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