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首页> 外文期刊>Plasma physics and controlled fusion >Radial electric field evolution in the vicinity of a rotating magnetic island in the TUMAN-3M tokamak
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Radial electric field evolution in the vicinity of a rotating magnetic island in the TUMAN-3M tokamak

机译：TUMAN-3M托卡马克中旋转的磁性岛附近的径向电场演化

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摘要

Radial electric field is known to be an important factor affecting transport and confinement in toroidal fusion plasmas. Langmuire probe measurements of peripheral radial electric field evolution in the presence of a rotating MHD island were performed on the TUMAN-3M tokamak in order to clear up the possible connection between the radial electric field and the island rotation, both in L and H-modes. The measurements showed that E-r became positive, if the island was large enough, in spite of the constant direction of the island's rotation. Comparing similar ohmic H-mode discharges with or without a rotating MHD island, it was found that in the presence of the large island E-r was always more positive. Possible explanations of this observation are discussed.
机译：已知径向电场是影响环形聚变等离子体中传输和封闭的重要因素。在TUMAN-3M托卡马克上对存在旋转MHD岛的情况下的Langmuire探针进行了测量，以消除在L和H模式下径向电场与岛旋转之间的可能联系。测量表明，尽管岛旋转足够恒定，但如果岛足够大，E-r仍为正。比较带有或不带有旋转MHD孤岛的类似欧姆H模式放电，发现存在大孤岛E-r时总是更正的。讨论了这种观察的可能解释。

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