Extraction probability of negative ions from hydrogen ion sources - Effects of filter magnetic field and gas pressure

被引：0
|
作者：
Fukumasa, O [1 ]
Nishida, R [1 ]
机构：
[1] Yamaguchi Univ, Fac Engn, Dept Elect & Elect Engn, Ube, Yamaguchi 7558611, Japan
来源：
PRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS | 2005年 / 763卷
关键词：
D O I：
暂无
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Trajectories of H(-) ions are calculated numerically by solving the 3D motion equation, including effects of collisional destruction, elastic collisions and charge exchange collisions. According to these trajectories, extraction probability of H(-) ions produced at any location inside the source and energy of extracted H- ions are discussed as a function of gas pressure. Effects of production zone and filter magnetic field on extraction probability are also discussed. The probability for surface produced H(-) ions keeps nearly the constant value, and that for volume produced H(-) ions decreases with gas pressure. The kinetic energy of extracted H(-) ions is reduced mainly by charge exchange collision.
引用
收藏
页码：159 / 167
页数：9
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