Closure of a kinetic model of plasma in strong turbulence by relaxation
Abstract
A Fokker-Planck kinetic equation for a turbulent plasma is derived by a repeated cascade decomposition. Calculation of the propagator and the kinetic equation determine the transport coefficients (diffusivity and turbulent viscosity) by means of a closure based on a relaxation procedure governing the approach to equilibrium. The k to the minus third power spectral law is obtained, which governs the coupling between the velocity and the electrostatic field fluctuations.
- Publication:
-
Academie des Sciences Paris Comptes Rendus Serie Sciences Mathematiques
- Pub Date:
- April 1978
- Bibcode:
- 1978CRASM.286..605T
- Keywords:
-
- Closure Law;
- Kinetic Equations;
- Kinetic Theory;
- Plasma Turbulence;
- Relaxation Method (Mathematics);
- Energy Spectra;
- Fokker-Planck Equation;
- Kinetic Energy;
- Turbulent Diffusion;
- Viscosity;
- Plasma Physics