Theory of particle diffusion in electrostatic turbulent plasma using extended direct-interaction approximation
Abstract
The theory of particle diffusion in an electrostatic turbulent plasma is formulated by applying the direct-interaction approximation (DIA) to subensemble-averaged functions instead of conventional ensemble-averaged ones. This theory approximately incorporates the Lagrangian description into the DIA through decorrelation trajectories. The running diffusion coefficient is shown to be calculated by solving a nonlinear ordinary differential equation together with an equation for decorrelation trajectories and by averaging initial conditions at the starting point of trajectories.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- October 2010
- DOI:
- 10.1017/S0022377810000127
- Bibcode:
- 2010JPlPh..76..681T