FokkerPlanck Velocity Diffusion Coefficient in Plasma Turbulence
Abstract
A direct method of measuring the FokkerPlanck velocity diffusion coefficient in plasma turbulence is developed. The method is consistent with, but more general than, the quasilinear approximation. The velocity variance <Δv^{2}> is measured by integrating the spacetime potential correlation function along unperturbed particle orbits. Correlation times and velocity diffusion coefficients are measured as a function of velocity in ionbeamplasma turbulence and the experimental results are compared with the FokkerPlanck theory requirements.
 Publication:

Physical Review Letters
 Pub Date:
 May 1976
 DOI:
 10.1103/PhysRevLett.36.1138
 Bibcode:
 1976PhRvL..36.1138G
 Keywords:

 Diffusion Coefficient;
 FokkerPlanck Equation;
 Plasma Turbulence;
 PlasmaParticle Interactions;
 Correlation;
 Ion Beams;
 Linear Equations;
 Particle Trajectories;
 SpaceTime Functions;
 Plasma Physics