Long-distance correlation and zonal flow structures induced by mean e × B shear flows in the biasing H-mode at TEXTOR

Y. Xu; S. Jachmich; R. R. Weynants; M. Van Schoor; M. Vergote; A. Krämer-Flecken; O. Schmitz; B. Unterberg; C. Hidalgo

doi:10.1063/1.3265367

Long-distance correlation and zonal flow structures induced by mean e × B shear flows in the biasing H-mode at TEXTOR

Y. Xu, S. Jachmich, R. R. Weynants, M. Van Schoor, M. Vergote, A. Krämer-Flecken, O. Schmitz, B. Unterberg, C. Hidalgo

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Résumé

Long-distance toroidal correlations of potential and density fluctuations have been investigated at the TEXTOR tokamak [H. Soltwisch, Plasma Phys. Controlled Fusion 26, 23 (1984)] in edge electrode-biasing experiments. During the biasing-induced H-mode, the dc E × B shear flow triggers a zonal flow structure and hence long-distance correlation in potential fluctuations, whereas for density fluctuations there is nearly no correlation. These results indicate an intimate interaction between the mean and zonal flows, and the significance of long range correlations in improved-confinement regimes.

langue originale	Anglais
Numéro d'article	110704
Pages (de - à)	110704
Nombre de pages	1
journal	Physics of Plasmas
Volume	16
Numéro de publication	11
Les DOIs	https://doi.org/10.1063/1.3265367
état	Publié - 2009

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10.1063/1.3265367

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title = "Long-distance correlation and zonal flow structures induced by mean e × B shear flows in the biasing H-mode at TEXTOR",

abstract = "Long-distance toroidal correlations of potential and density fluctuations have been investigated at the TEXTOR tokamak [H. Soltwisch, Plasma Phys. Controlled Fusion 26, 23 (1984)] in edge electrode-biasing experiments. During the biasing-induced H-mode, the dc E × B shear flow triggers a zonal flow structure and hence long-distance correlation in potential fluctuations, whereas for density fluctuations there is nearly no correlation. These results indicate an intimate interaction between the mean and zonal flows, and the significance of long range correlations in improved-confinement regimes.",

author = "Y. Xu and S. Jachmich and Weynants, {R. R.} and {Van Schoor}, M. and M. Vergote and A. Kr{\"a}mer-Flecken and O. Schmitz and B. Unterberg and C. Hidalgo",

year = "2009",

doi = "10.1063/1.3265367",

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journal = "Physics of Plasmas",

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T1 - Long-distance correlation and zonal flow structures induced by mean e × B shear flows in the biasing H-mode at TEXTOR

AU - Xu, Y.

AU - Jachmich, S.

AU - Weynants, R. R.

AU - Van Schoor, M.

AU - Vergote, M.

AU - Krämer-Flecken, A.

AU - Schmitz, O.

AU - Unterberg, B.

AU - Hidalgo, C.

PY - 2009

Y1 - 2009

N2 - Long-distance toroidal correlations of potential and density fluctuations have been investigated at the TEXTOR tokamak [H. Soltwisch, Plasma Phys. Controlled Fusion 26, 23 (1984)] in edge electrode-biasing experiments. During the biasing-induced H-mode, the dc E × B shear flow triggers a zonal flow structure and hence long-distance correlation in potential fluctuations, whereas for density fluctuations there is nearly no correlation. These results indicate an intimate interaction between the mean and zonal flows, and the significance of long range correlations in improved-confinement regimes.

AB - Long-distance toroidal correlations of potential and density fluctuations have been investigated at the TEXTOR tokamak [H. Soltwisch, Plasma Phys. Controlled Fusion 26, 23 (1984)] in edge electrode-biasing experiments. During the biasing-induced H-mode, the dc E × B shear flow triggers a zonal flow structure and hence long-distance correlation in potential fluctuations, whereas for density fluctuations there is nearly no correlation. These results indicate an intimate interaction between the mean and zonal flows, and the significance of long range correlations in improved-confinement regimes.

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M3 - Article

AN - SCOPUS:71749111304

SN - 1070-664X

VL - 16

SP - 110704

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 11

M1 - 110704

ER -

Long-distance correlation and zonal flow structures induced by mean e × B shear flows in the biasing H-mode at TEXTOR

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