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Observation of Inward Turbulent Particle Transport in Edge Plasma Region of CHS Heliotron/Torsatron

Toi, K; Ohkuni, K; Shats, Michael; Akiyama, R; Goto, M; Isobe, M; Matsunaga, G; Matsuoka, K; Minami, T; Morita, S; Nishimura, S; Nomura, I; Okamura, Satoshi; Osakabe, M; Shimizu, A; Suzuki, C; Takagi, S; Takahashi, C; Takechi, M; Tanaka, K; Yoshimura, Yasuo


Reversal of turbulent particle flux near the plasma edge of CHS heliotron/torsatron was observed on various discharge conditions, i.e. during tangential neutral beam injection, electron cyclotron heating at the far edge, and the sawtooth crash. For all cases, the reversal is realized at a narrow particular layer near the plasma edge, when plasma parameters go into low collisionality. The reversal is caused by the change in the cross phase between density (ne) and poloidal electric field (Eθ)...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Plasma Physics and Controlled Fusion


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