| MEVVA离子源凸形引出电极的研制 |
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| 引用本文： | 吴先映,张孝吉,李强,张胜基,张荟星,刘安东. MEVVA离子源凸形引出电极的研制[J]. 核技术, 2006, 29(2): 93-96 |
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| 作者姓名： | 吴先映 张孝吉 李强 张胜基 张荟星 刘安东 |
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| 作者单位： | 北京师范大学低能核物理研究所,射线束技术与材料改性教育部重点实验室,北京市辐射中心,北京,100875 |
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| 摘 要： | 介绍了金属蒸气真空弧(Metal vaporvacuumarc,MEVVA)离子源的凸形引出电极的研制.研究表明,凸形引出电极可以完成离子束的强制发散功能,从而在较短的引出距离和较小的引出电极面积的条件下得到大的束斑和均匀可应用的束流分布.通过对几种不同的电极结构的比较研究,得到了满足应用要求的凸形引出电极.
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| 关 键 词： | 金属蒸气真空弧离子源 引出电极 束流分布 |
| 收稿时间： | 2005-10-09 |
| 修稿时间： | 2005-10-09 |
Gibbous extraction electrode for MEVVA ion source |
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| WU Xianying,ZHANG Xiaoji,LI Qiang,ZHANG Shengji,ZHANG Huixing,LIU Andong. Gibbous extraction electrode for MEVVA ion source[J]. Nuclear Techniques, 2006, 29(2): 93-96 |
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| Authors: | WU Xianying ZHANG Xiaoji LI Qiang ZHANG Shengji ZHANG Huixing LIU Andong |
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| Affiliation: | Institute of Low Energy Nuclear Physics, Beijing Normal University, The Key Laboratory of Beam Technology and Materia Modification of Ministry of Education, Beijing Radiation Center, Beijing 100875 |
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| Abstract: | Gibbous extraction electrode for MEVVA ion source is introduced. It is indicated that gibbous extraction electrode can be used to force the ion beam spreading widely like a convex. So intenser ion beam and larger uniform beam spot can be obtained in smaller extraction area and shorter extraction distance. Gibbous extraction electrode which can meet the demand of applications was got by experimentally comparing several different structures of electrode. |
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| Keywords: | MEVVA ion source Extraction electrode Ion beam distribution |
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