Comparison of plasma turbulence in the low- and high-field Scrape-Off Layers in the T-10 tokamak
作者： G.S Kirnev , V.P Budaev , S.A Grashin , L.N Khimchenko , D.V Sarytchev
DOI: 10.1088/0029-5515/45/6/007
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摘要: Experimental investigation of the Scrape-Off Layer (SOL) turbulence and perpendicular anomalous particle transport in high density regime T-10 tokamak is presented. Comparison plasma parameters measured at low-field side (LFS) high-field (HFS) shows that inboard essentially differs from outboard one. Turbulence has an intermittent character but fluctuation level ion saturation current about two times lower than LFS. The radial turbulent flux effective diffusion coefficient LFS are 3–5 higher those observed HFS. Enhanced defined by structures formed vicinity last closed surface. poloidal electric field inside different directions sides column. drift induced directed towards vacuum vessel both These experiments support hypothesis SOL parallel flow might be caused additional mechanism such as 'ballooning' transport, which generates a larger particles core into outer mid-plane.
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