Analytical description of stochastic field-Line wandering in magnetic turbulence

A. Shalchi, Ioannis Kourakis

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

A nonperturbative nonlinear statistical approach is presented to describe turbulent magnetic systems embedded in a uniform mean magnetic field. A general formula in the form of an ordinary differential equation for magnetic field-line wandering (random walk) is derived. By considering the solution of this equation for different limits several new results are obtained. As an example, it is demonstrated that the stochastic wandering of magnetic field-lines in a two-component turbulence model leads to superdiffusive transport, contrary to an existing diffusive picture. The validity of quasilinear theory for field-line wandering is discussed, with respect to different turbulence geometry models, and previous diffusive results are shown to be deduced in appropriate limits.
Original languageEnglish
Article number092903
Pages (from-to)092903/1-092903/6
Number of pages6
JournalPhysics of Plasmas
Volume14 (9)
Issue number9
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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