On plasma diffusion in strong turbulence

It is shown that the velocity diffusivity of electrons in strong Langmuir turbulence is linearly proportional to the root-mean-square (rms) value of the electric field. The timedependent diffusivity previously identified is a transient phenomenon. In 2-D spatial diffusion due to E x B velocity turbulence, time-dependent intermediate diffusivity emerges also followed by a well-behaved diffusivity proportional to the rms amplitude of the turbulent field.