Response of H− ions to extraction field in a negative hydrogen ion source
Response of H− ions to extraction field in a negative hydrogen ion source
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H− 离子对负氢离子源中萃取场的响应
DOI：
10.1016/j.fusengdes.2017.02.041
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发表时间：
2017
影响因子：
1.7
通讯作者：
M. Shibuya
中科院分区：
文献类型：
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作者：
S. Geng;K. Tsumori;H. Nakano;M. Kisaki;K. Ikeda;M. Osakabe;K. Nagaoka;Y. Takeiri;M. Shibuya
为了研究氢离子的动力学并了解在铯种子负离子源中灯丝电弧驱动等离子体内的提取过程，使用定向朗缪尔探针结合光脱离测量进行了诊断实验。获得了 H-离子流的二维流型以及 H-离子密度分布。结果表明，H−离子从等离子体网格表面方向而来，流向提取区的等离子体。在束流提取过程中，氢离子流转向束流方向。 H−离子流的驻点距离等离子体网格约 20 mm。在驻点附近，出现由光束提取引起的 H−密度最大减量。结果表明 H- 离子从血浆体积中提取出来。提取过程发生在等离子体网格孔径附近的区域，其边界距等离子体网格约 20 毫米。
In order to investigated the dynamics of H−ions and understand the extraction process inside filament-arc-driven plasmas in a Cs-seeded negative ion source, diagnostic experiments using a directional Langmuir probe combined with photodetachment measurement have been conducted. Two-dimensional flow pattern of H−ion flow has been obtained as well as the profile of H−ion density. The result shows that H−ions come from the direction of plasma grid surface, flow to the plasma in the extraction region. During beam extraction, H−ion flow turns to the beam direction. The stagnation point of H−ion flow is at ∼20 mm apart from the plasma grid. Around the stagnation point, the maximum decrement of H−density caused by beam extraction appears. The results indicate that H−ions are extracted from the plasma volume. The extraction process occurs in a region near the plasma grid aperture with boundary of ∼20 mm apart from the plasma gird.
使用激光光脱离测速仪 (LPDV) 测量负离子流速的概念
DOI：
--
发表时间：
2006
期刊：
Contributions to Plasma Physics 46
影响因子：
--
作者：
S.Kado;S.Kijita;T.Shikama;Y.Iida;D.Yamasaki;A.Okamoto;S.Tanaka
通讯作者：
S.Tanaka