Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations

Details Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations Evidence of Critical Balance in Kinetic Alfven Wave Turbulence Simulations

2011-12-30

arxiv.org/abs/1201.0056v1

Physics

Plasma Physics

10 pages, 9 figures, accepted for publication in Physics of Plasmas

Scientific paper

A numerical simulation of kinetic plasma turbulence is performed to assess the applicability of critical balance to kinetic, dissipation scale turbulence. The analysis is performed in the frequency domain to obviate complications inherent in performing a local analysis of turbulence. A theoretical model of dissipation scale critical balance is constructed and compared to simulation results, and excellent agreement is found. This result constitutes the first evidence of critical balance in a kinetic turbulence simulation and provides evidence of an anisotropic turbulence cascade extending into the dissipation range. We also perform an Eulerian frequency analysis of the simulation data and compare it to the results of a previous study of magnetohydrodynamic turbulence simulations.

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