TY - GEN
T1 - Study of transition mechanism based on poloidal ion viscosity using biasing electrode in heliotron J
AU - Takahashi, H.
AU - Kitajima, S.
AU - Ishii, K.
AU - Sato, Y.
AU - Tachibana, J.
AU - Koike, S.
AU - Oku, T.
AU - Yokoyama, M.
AU - Suzuki, Y.
AU - Satake, S.
AU - Yamamoto, S.
AU - Ohshima, S.
AU - Okada, H.
AU - Nagasaki, K.
AU - Kobayashi, S.
AU - Minami, T.
AU - Mizuuchi, T.
AU - Sano, F.
PY - 2013
Y1 - 2013
N2 - An improved confinement could be successfully achieved by an electrode biasing in the Heliotron J. The increases of ne and n eTe, the decrease of the potential fluctuation and the formation of strong negative Er were observed. The nonlinearity in the plasma resistance was found in the transition region and the clear hysteresis was observed. An intermittent transition phenomenon was found in the marginal-biasing condition. In the discharge, forward and backward transition repetitively occurred. This is considered due to the spontaneous change of the normalized poloidal torque around the transition threshold.
AB - An improved confinement could be successfully achieved by an electrode biasing in the Heliotron J. The increases of ne and n eTe, the decrease of the potential fluctuation and the formation of strong negative Er were observed. The nonlinearity in the plasma resistance was found in the transition region and the clear hysteresis was observed. An intermittent transition phenomenon was found in the marginal-biasing condition. In the discharge, forward and backward transition repetitively occurred. This is considered due to the spontaneous change of the normalized poloidal torque around the transition threshold.
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M3 - Conference contribution
AN - SCOPUS:84905643142
SN - 9781632663108
T3 - 40th EPS Conference on Plasma Physics, EPS 2013
SP - 794
EP - 797
BT - 40th EPS Conference on Plasma Physics, EPS 2013
PB - European Physical Society (EPS)
T2 - 40th EPS Conference on Plasma Physics, EPS 2013
Y2 - 1 July 2013 through 5 July 2013
ER -