Solutions of the Fokker-Planck equation for the early time when the diffusive modes are not yet valid |
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| Authors: | Jörn E Kunstmann |
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| Institution: | (1) Institut für Reine und Angewandte Kernphysik, Kiel, B.R.D. |
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| Abstract: | The transport of energetic charged particles in fluctuating magnetic fields is analysed by means of the Fokker-Planck equation for the early time, when the diffusive modes are not yet valid. Exact solutions are found for the particle fluxes integrated over space; after these have reached a time-independent final steady state, the usually considered diffusive modes of the velocity-integrated density become valid. The time for that is finite. The analysis is done both for a constant and a divergent mean magnetic field. |
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