Non-Markovian velocity diffusion in plasma turbulence

Date

1993-05

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Publisher

Texas Tech University

Abstract

The behavior of charged particles placed in random electric fields in a fully ionized plasma can be observed through test particle computer simulations. In a weak field, the observed diffusion rate in velocity space is known to be in good agreement with the conventional quasilinear theory. However, as the field amplitude increases, the velocity diffusion is found to reveal its time-dependent nature, or non-Markovian property. Such a non-Markovian process is studied in detail both analytically and numerically.

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