Suppression of phase mixing in drift-kinetic plasma turbulence

J. T. Parker, E. G. Highcock, A. A. Schekochihin, P. J. Dellar

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Transfer of free energy from large to small velocity-space scales by phase mixing leads to Landau damping in a linear plasma. In a turbulent drift-kinetic plasma, this transfer is statistically nearly canceled by an inverse transfer from small to large velocity-space scales due to "anti-phase-mixing" modes excited by a stochastic form of plasma echo. Fluid moments (density, velocity, and temperature) are thus approximately energetically isolated from the higher moments of the distribution function, so phase mixing is ineffective as a dissipation mechanism when the plasma collisionality is small.
Original languageEnglish (US)
Pages (from-to)070703
JournalPhysics of Plasmas
Volume23
Issue number7
DOIs
StatePublished - Jul 2016
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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