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Ishikawa, Masao; Takechi, Manabu; Shinohara, Koji; Kusama, Yoshinori; Cheng, C. Z.*; Matsunaga, Go; Todo, Yasushi*; Gorelenkov, N. N.*; Kramer, G. J.*; Nazikian, R. M.*; et al.
Nuclear Fusion, 45(12), p.1474 - 1480, 2005/12
Times Cited Count:38 Percentile:74.77(Physics, Fluids & Plasmas)To investigate energetic ion transport induced by Alfven eigenmodes (AEs) the neutron emission profile measurement and the charge exchange (CX) neutral particle flux measurement by Natural Diamond Detector has been performed simultaneously in the JT-60U for the first time. The energetic ion profiles inferred from these measurements indicate that ALEs cause a radial redistribution of energetic ions of limited energy range from the core region to the outer region of the plasma in weak shear plasmas. This energy range is consistent with the resonance condition between the mode and the energetic ions. In reversed shear plasmas, reversed-shear-induced AEs (RSAEs) and their transition to TAEs as the minimum value of the safety factor decreases has been observed. Neutron measurements suggest energetic ion loss is large in the transition phase from RSAEs to TAEs.
Wang, S.*; Ozeki, Takahisa; Xie, J.*; Hayashi, Nobuhiko
Physics of Plasmas, 9(11), p.4654 - 4663, 2002/11
Times Cited Count:0 Percentile:0.02(Physics, Fluids & Plasmas)no abstracts in English
Wang, S.; Ozeki, Takahisa; Tobita, Kenji
Physical Review Letters, 88(10), p.105004_1 - 105004_4, 2002/03
Times Cited Count:130 Percentile:94.3(Physics, Multidisciplinary)A theoretical model has been established to show that energetic co-circulating ions can stabilize internal kink modes.And the theoretical model has been applied to interpret the recent experiments on sawtooth stabilization by energetic co-circulating ions.
*; Nakagawa, Tsuneo; Kikuchi, Yasuyuki
JAERI-M 9981, 59 Pages, 1982/02
no abstracts in English