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

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

doi:10.1016/j.physleta.2008.08.003

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 journal › Article › peer-review

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 language	English
Pages (from-to)	5987-5990
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	372
Issue number	38
Early online date	6 Aug 2008
DOIs	https://doi.org/10.1016/j.physleta.2008.08.003
Publication status	Published - 15 Sept 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1016/j.physleta.2008.08.003

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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",

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AU - Anderson, Johan

AU - Li, Jiquan

AU - Kishimoto, Yasuaki

AU - Kim, Eun jin

PY - 2008/9/15

Y1 - 2008/9/15

N2 - 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

AB - 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

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IS - 38

ER -

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

Abstract

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