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

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

2008-10-02

arxiv.org/abs/0810.0362v1

Physics

Plasma Physics

21 pages

Scientific paper

10.1063/1.3063061

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 in 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. 52.35.Ra

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