TY - JOUR
T1 - Structural formation induced by electrode biasing in tokamaks
T2 - Accessibility to a double-peaked Er shear layer
AU - Kasuya, N.
AU - Itoh, K.
AU - Takase, Y.
PY - 2004/5
Y1 - 2004/5
N2 - Electrode biasing is one of the methods for controlling the radial electric field externally and can induce a transition to an improved confinement state. We have shown theoretically that a solitary Er structure with a single peak is formed selectively by electrode biasing in our previous works. That a multiple-peaked E r structure, which has a wider E × B flow shear region, can exist stably was also derived. In this paper, accessibility to a double-peaked Er structure is demonstrated theoretically by double electrode biasing with an applied voltage ramp-up.
AB - Electrode biasing is one of the methods for controlling the radial electric field externally and can induce a transition to an improved confinement state. We have shown theoretically that a solitary Er structure with a single peak is formed selectively by electrode biasing in our previous works. That a multiple-peaked E r structure, which has a wider E × B flow shear region, can exist stably was also derived. In this paper, accessibility to a double-peaked Er structure is demonstrated theoretically by double electrode biasing with an applied voltage ramp-up.
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U2 - 10.1088/0741-3335/46/5A/025
DO - 10.1088/0741-3335/46/5A/025
M3 - Article
AN - SCOPUS:2942626187
VL - 46
SP - A235-A240
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
SN - 0741-3335
IS - 5 SUPPL. A
ER -