On the transport of charged particles in turbulent fields: Comparison of an exact solution with the quasilinear approximation

J. R. Jokipii, I. Lerche

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4 Scopus citations


The problem of charged-particle transport in a magnetic field which is solely a function of time is solved. The solution is obtained exactly, to all orders in the field, in the limit of large wavelengths normal to the magnetic field. It is shown that the usual quasilinear, Fokker-Planck approximation is equal to the exact solution in the limit of times large compared with the correlation time of the fluctuating field. This is just the regime where the approximation has been used in the past, and this special case thus gives some support to the standard approximation techniques.

Original languageEnglish (US)
Article number002
Pages (from-to)619-625
Number of pages7
JournalPlasma Physics
Issue number7
StatePublished - Dec 1 1973


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physics and Astronomy(all)

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