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Theory of particle diffusion in electrostatic turbulent plasma using extended direct-interaction approximation

Published online by Cambridge University Press:  08 March 2010

M. TAGUCHI
M. TAGUCHI*
Affiliation:
College of Industrial Technology, Nihon University, 2-11-1 Shin-ei, Narashino, Chiba 275-0005, Japan (taguchi.masayoshi@nihon-u.ac.jp)
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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.

Type
Papers
Information
Journal of Plasma Physics , Volume 76 , Issue 5 , October 2010 , pp. 681 - 697
Copyright
Copyright © Cambridge University Press 2010

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