| 阴极有半圆柱形凹槽的非对称磁控管型H~-离子源的试验研究 |
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| 引用本文： | 张华顺,景毓辉,蒋家胜,张世纲.阴极有半圆柱形凹槽的非对称磁控管型H~-离子源的试验研究[J].原子能科学技术,1988(2). |
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| 作者姓名： | 张华顺 景毓辉 蒋家胜 张世纲 |
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| 作者单位： | 中国科学院高能物理研究所 北京
(张华顺，景毓辉，蒋家胜)，清华大学 北京(张世纲) |
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| 摘 要： | 一、前言国内唯一的一台标准磁控管型H~-离子源已在1983年完成了桌上试验研究,达到了预期的指标。试验中发现,该源按弧功率估算应能引出更多的H~-束流(>50mA),H~-束流的引出除受该装置引出电压(<18kV)的限制外,阴极表面利用系数低也限制了H~-束流的引出,为提高源的效率,引用了阴极-阳极引出狭缝形状聚焦技术,试制了一个带半圆
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| 关 键 词： | 非对称磁控管型H~-离子源 凹槽形阴极 形状聚焦 阴极表面利用系数 |
AN EXPERIMENTAL STUDY ON ASYMMETRIC MAGNETRON H~- SOURCE WITH GROOVED CATHODE |
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| ZHANG HUASHUN,JING YUHUI,JIANG JIASENG,ZHANG SHIGANG Institute of High-Energy Physics,Academia Sinica,Beijing,China Qing Hua University,Beijing.AN EXPERIMENTAL STUDY ON ASYMMETRIC MAGNETRON H~- SOURCE WITH GROOVED CATHODE[J].Atomic Energy Science and Technology,1988(2). |
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| Authors: | ZHANG HUASHUN JING YUHUI JIANG JIASENG ZHANG SHIGANG Institute of High-Energy Physics Academia Sinica Beijing China Qing Hua University Beijing |
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| Abstract: | An asymmetric magnetron H~- source with grooved cathode is built toreplace a standard-magnetron H~- source. This new cathode has a semi-cylindrical groove and its height is reduced so that the cathode-anode spacing in the back of the source increased from 1 mmto 3.6 mm. This leads to an improvement by a factor of three to four inreducing arc power, which depend on the utilization factor of the cathode area.In addition, arc starting was easier than the standard magnetron H~--source. Less influence of the arc current fluctuation and the deviation from thegrooved cathode-anode extracting slit are observed. Also, it is showed gas efficiencyis improved in our source. A new discharge arc chamber and the experimental results on the desk test ofthis device are reported in detail. |
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| Keywords: | Asymmetric magnetron H~- source Grooved cathode Geometry focus Utilization factor of cathode area |
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