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

被引：28

作者：

Xu, Y. ^{[1
]}

Jachmich, S. ^{[1
]}

Weynants, R. R. ^{[1
]}

Van Schoor, M. ^{[1
]}

Vergote, M. ^{[1
]}

Kraemer-Flecken, A. ^{[2
]}

Schmitz, O. ^{[2
]}

Unterberg, B. ^{[2
]}

Hidalgo, C. ^{[3
]}

机构：

[1] Koninklijke Mil Sch, Ecole Royale Mil, Assoc Euratom Belgian State, Lab Phys Plasmas,Lab Plasmafys, B-1000 Brussels, Belgium

[2] Assoc EURATOM FZJ, Forschungszentrum, Inst Energie Forsch Plasma Phys, D-52425 Julich, Germany

[3] EURATOM, CIEMAT, Lab Nacl Fus, Madrid 28040, Spain

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 11期

关键词：

CONFINEMENT; TURBULENCE; PLASMA; EDGE;

D O I：

10.1063/1.3265367

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Long-distance toroidal correlations of potential and density fluctuations have been investigated at the TEXTOR tokamak [H. Soltwisch et al., Plasma Phys. Controlled Fusion 26, 23 (1984)] in edge C electrode-biasing experiments. During the biasing-induced H-mode, the dc E X 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 [doi: 10.1063/1.3265367]

引用

页数：4