Analysis of the Double-Ion Plasma in the Extraction Region in Hydrogen Negative Ion Sources

被引：8
|
作者：
Fukuyama, T. [1 ]
Okuda, S. [1 ]
Fukano, A. [2 ]
Tsumori, K. [3 ]
Nakano, H. [3 ]
Hatayama, A. [1 ]
机构：
[1] Keio Univ, Grad Sch Sci & Technol, Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan
[2] Tokyo Metropolitan Coll Ind Technol, Shinagawa Ku, Tokyo, Japan
[3] Natl Inst Fus Sci, Gifu, Japan
来源：
THIRD INTERNATIONAL SYMPOSIUM ON NEGATIVE IONS, BEAMS AND SOURCES (NIBS 2012) | 2013年 / 1515卷
关键词：
Negative ion souces; particle-in-cell (PIC); extraction;
D O I：
10.1063/1.4792772
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To understand the plasma characteristics in the extraction region of hydrogen negative ion sources is very important for the optimization of H- extraction from the sources. The profile of plasma density in the extraction region is analyzed with a 2D PIC modeling of the NIFS-R&D H- sources. The simulation results make clear the physics process forming a double-ion plasma layer (which consists of positive H+ and negative H- ions) recently observed in the Cs-seeded experiments of the NIFS-R&D source in the vicinity of the extraction hole and the PG (plasma grid).
引用
收藏
页码：74 / 80
页数：7
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