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arXiv 1404.0932physics.plasm-ph
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仿星器中沿通量面的静电势变化

Electrostatic potential variations along flux surfaces in stellarators

M. A. Pedrosa, J. A. Alonso, J. M. García-Regaña, C. Hidalgo, J. L. Velasco, I. Calvo, C. Silva, P. Helander, R. Kleiber

摘要:

本文首次观测了环形磁约束装置磁通面内的静电势变化。测量在TJ-II仿星器与两个遥远的朗缪尔探针阵列。在电子根波加热的等离子体中,边缘浮置电位显示出几十伏的差异。在等离子体边缘形成离子根电场后,对于较高的密度和较低的电子温度,差异减小。新古典蒙特卡罗模拟估计正确的数量级的整体变化的潜力和预测的趋势观察到的径向电场。然而,对于探针的特定位置,模拟给出的差异小于实验观察到的差异。

英文摘要:

First observations of electrostatic potential variations within the flux surfaces of a toroidal magnetic confinement device are presented. Measurements are taken in the TJ-II stellarator with two distant Langmuir probe arrays. The edge floating potentials display differences of several tens of Volts in electron-root wave-heated plasmas. The differences are reduced for higher densities and lower electron temperatures after the ion-root electric field forms at the plasma edge. Neoclassical Monte Carlo simulations estimate the correct order of magnitude for the overall variation in potential and predict the trend observed with the radial electric field. However, for the specific location of the probes, the simulations give differences smaller than those observed experimentally.

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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