Probe method for measuring the diffusion coefficient in edge plasma

Amemiya Hiroshi; Uehara Kazuya; Ohshima Shinsuke; Mizuuchi Tohru

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Probe method for measuring the diffusion coefficient in edge plasma

机译：测量边缘等离子体中扩散系数的探针方法

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A probe method to measure the diffusion coefficient and the ion temperature in the edge plasma is proposed. The probe is constructed as an asymmetric double probe, where one electrode is sensitive to the direction of magnetic field while the other is insensitive to it. The ratio of ion saturation currents to two electrodes is used to determine the diffusion coefficient from which the ion temperature is estimated. The saturation currents are calculated by taking the anisotropic diffusion to the probe into account. The present probe method is applicable in the edge plasma even with such a complicated magnetic field as that in helical devices. (C) 2016 The Japan Society of Applied Physics

机译：提出了一种测量边缘等离子体中扩散系数和离子温度的探针方法。该探头构造为非对称双探头，其中一个电极对磁场方向敏感，而另一个电极对磁场方向不敏感。离子饱和电流与两个电极的比率用于确定从中估算离子温度的扩散系数。通过考虑到探头的各向异性扩散来计算饱和电流。即使在像螺旋装置那样的复杂磁场的情况下，本探针方法也可应用于边缘等离子体。（C）2016年日本应用物理学会

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《Japanese journal of applied physics》 |2016年第3期|038004.1-038004.3|共3页
作者
Amemiya Hiroshi; Uehara Kazuya; Ohshima Shinsuke; Mizuuchi Tohru;
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Riken Obkai, Wako, Saitama 3510198, Japan;

JAEA, Tokai, Ibaraki 31911, Japan;

Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan;

Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan;

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Probe method for measuring the diffusion coefficient in edge plasma

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