Detailed analytical investigation of magnetic field line random walk in turbulent plasmas: II. Isotropic turbulence

Yannis Kourakis, R.C. Tautz, A. Shalchi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The random walk of magnetic field lines in the presence of magnetic turbulence in plasmas is investigated from first principles. An isotropic model is employed for the magnetic turbulence spectrum. An analytical investigation of the asymptotic behavior of the field-line mean-square displacement is carried out. in terms of the position variable z. It is shown that varies as similar to z ln z for large distance z. This result corresponds to a superdiffusive behavior of field line wandering. This investigation complements previous work, which relied on a two-component model for the turbulence spectrum. Contrary to that model, quasilinear theory appears to provide an adequate description of the field line random walk for isotropic turbulence.
Original languageEnglish
Pages (from-to)183-192
Number of pages10
JournalJournal of plasma physics
Volume75
Issue number2
DOIs
Publication statusPublished - Apr 2009

ASJC Scopus subject areas

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Detailed analytical investigation of magnetic field line random walk in turbulent plasmas: II. Isotropic turbulence'. Together they form a unique fingerprint.

Cite this