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Parametric dependence of the edge radial electric field in the DII-D Tokamak

机译:DII-D托卡马克中边缘径向电场的参数依赖性

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摘要

High spatially resolved measurements of the radial electric field E_r, have been made across the transition from L mode to H mode plasmas for many different plasma parameters and conditions. The evolution of the well-like structure of the E_r profile formed at the L-H transition has been investigated. No distinct variation in the shape or width of the E_r well at the L-H transition is observed as a function of the plasma parameters investigated, such as the plasma current, the toroidal magnetic field and the plasma density. The value of E_r is negative just inside the last closed flux surface(LCFS)for all the plasma studied.
机译:对于许多不同的等离子体参数和条件,已经在从L模式等离子体过渡到H模式等离子体的过程中对径向电场E_r进行了高度空间分辨的测量。已经研究了在L-H跃迁处形成的E_r轮廓的类孔结构的演变。在L-H跃迁中,未观察到E_r阱的形状或宽度发生明显变化,这与所研究的等离子体参数(例如,等离子体电流,环形磁场和等离子体密度)有关。对于所有研究的等离子体,E_r的值恰好在最后一个封闭通量表面(LCFS)内部为负。

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