Particle flux associated with stochastic processes |
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| Authors: | C E Newman P A Sturrock E Tademaru |
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| Institution: | (1) Institute for Plasma Research, Stanford University, Stanford, California, USA;(2) Department of Applied Physics, Stanford, USA;(3) Present address: the National Radio Astronomy Observatory, Charlottesville, Virginia |
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| Abstract: | The Lagrange expansion, which may be used to derive the Fokker-Planck equation, is here used to derive the corresponding expression for the flux of particles subject to a stochastic scattering process. The coefficients which occur in this expression are, in general, not the same as the coefficients which occur in the Fokker-Planck equation itself. In the special case that the particle distribution involves only one independent variable, the particle flux is determined by the familiar Fokker-Planck coefficients. Evaluation of particle flux is of special interest in the study of stochastic acceleration. |
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