scholarly journals Effect of electrode biasing on the radial electric field structure bifurcation in tokamak plasmas

2003 ◽  
Vol 43 (4) ◽  
pp. 244-249 ◽  
Author(s):  
N Kasuya ◽  
K Itoh ◽  
Y Takase
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Field Structure ◽  
Tokamak Plasmas ◽  
Electrode Biasing

scholarly journals Solitary radial electric field structure in tokamak plasmas

1998 ◽  
Vol 5 (12) ◽  
pp. 4121-4123 ◽  
Author(s):  
K. Itoh ◽  
S.-I. Itoh ◽  
M. Yagi ◽  
A. Fukuyama
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Field Structure ◽  
Tokamak Plasmas

Effects of edge biasing on blob dynamics and associated transport in the edge of the J-TEXT tokamak

2022 ◽  
Author(s):  
Wei Li ◽  
Yuhong Xu ◽  
Jun Cheng ◽  
Hai Liu ◽  
Zhipeng Chen ◽  
...  
Keyword(s):  
Electric Field ◽  
Large Scale ◽  
Turbulent Transport ◽  
Radial Electric Field ◽  
Plasma Confinement ◽  
Flow Shear ◽  
Theoretical Predictions ◽  
Outward Motion ◽  
Electrode Biasing ◽  
Particle Confinement

Abstract Effects of edge radial electric field Er and Er × B flow shear on edge turbulence and turbulent transport, in particular, on large-scale blobs and blobby transport have been investigated in the positive and negative biasing discharges in the J-TEXT tokamak. The results show that under certain conditions, the positive electrode biasing induces better plasma confinement than the negative biasing. Further studies reveal that in addition to flow shear effects on blob dynamics, the local radial electric field at the edge region plays a significant role in repulsion of the blobs and associated transport, leading to improvement of particle confinement when the outward motion of the blobs is blocked. The results are in accordance with theoretical predictions.

scholarly journals Edge radial electric field structure and its connections to H-mode confinement in Alcator C-Mod plasmas

2009 ◽  
Vol 16 (5) ◽  
pp. 056103 ◽  
Author(s):  
R. M. McDermott ◽  
B. Lipschultz ◽  
J. W. Hughes ◽  
P. J. Catto ◽  
A. E. Hubbard ◽  
...  
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Field Structure

Bifurcation and Relaxation of Radial Electric Field in Enhanced Reversed Shear Tokamak Plasmas

1999 ◽  
Vol 83 (19) ◽  
pp. 3840-3843 ◽  
Author(s):  
K. C. Shaing ◽  
A. Y. Aydemir ◽  
R. Hiwatari ◽  
W. A. Houlberg ◽  
Y. Ogawa ◽  
...  
Keyword(s):  
Electric Field ◽  
Radial Electric Field ◽  
Tokamak Plasmas ◽  
Reversed Shear
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