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arXiv 0910.5873physics.plasm-ph
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JET等离子体中约束电流带的观测

Observation of confined current ribbon in JET plasmas

E. R. Solano, P. J. Lomas, B. Alper, G. S. Xu, Y. Andrew, G. Arnoux, A. Boboc, L. Barrera, P. Belo, M. N. A. Beurskens, M. Brix, K. Crombe, E. de la Luna, S. De… 展开作者

E. R. Solano, P. J. Lomas, B. Alper, G. S. Xu, Y. Andrew, G. Arnoux, A. Boboc, L. Barrera, P. Belo, M. N. A. Beurskens, M. Brix, K. Crombe, E. de la Luna, S. Devaux, T. Eich, S. Gerasimov, C. Giroud, D. Harting, D. Howell, A. Huber, G. Kocsis, A. Korotkov, A. Lopez-Fraguas, M. F. F. Nave, E. Rachlew, F. Rimini, S. Saarelma, A. Sirinelli, H. Thomsen, L. Zabeo, D. Zarzoso, JET EFDA contributors

摘要:

我们报告的JET等离子体内的局部电流结构的识别。它是一个场对准的封闭螺旋带,携带与背景电流分布相同方向的电流(同向电流),随离子速度环形旋转(同向旋转)。它似乎位于等离子体压力曲线中的一个平点,在基座的顶部。该结构在低密度、高旋转等离子体中自发出现,并且可以持续长达1.4秒,这一时间与局部电阻时间相当。它大大推迟了第一个ELM的出现。

英文摘要:

we report the identification of a localised current structure inside the JET plasma. It is a field aligned closed helical ribbon, carrying current in the same direction as the background current profile (co-current), rotating toroidally with the ion velocity (co-rotating). It appears to be located at a flat spot in the plasma pressure profile, at the top of the pedestal. The structure appears spontaneously in low density, high rotation plasmas, and can last up to 1.4 s, a time comparable to a local resistive time. It considerably delays the appearance of the first ELM.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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