Quasilinear analysis of the zonal flow back-reaction on ion-temperature-gradient mode turbulence

Johan Anderson, Jiquan Li, Yasuaki Kishimoto, Eun jin Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

There is strong evidence in favor of zonal flow suppression in the Ion-Temperature-Gradient (ITG) mode turbulence, specifically close to the linear stability threshold. The present Letter attempts to analytically calculate the effects of zonal flow suppression of the ITG turbulence by deriving a modified dispersion relation including the back-reaction of the zonal flows on the ITG turbulence based on the quasilinear theory. The results are manifested in a reduction of the linear growth rate and an increase in the effective linear ITG threshold. Crown

Original languageEnglish
Pages (from-to)5987-5990
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume372
Issue number38
Early online date6 Aug 2008
DOIs
Publication statusPublished - 15 Sep 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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