| 脉冲电场下两种电极材料表面电子发射阈值特性的实验研究 |
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| 引用本文： | 苏兆锋,杨海亮,张鹏飞,来定国,郭建明,任书庆,王强.脉冲电场下两种电极材料表面电子发射阈值特性的实验研究[J].物理学报,2014,63(10):106801-106801. |
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| 作者姓名： | 苏兆锋 杨海亮 张鹏飞 来定国 郭建明 任书庆 王强 |
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| 作者单位： | 西北核技术研究所强脉冲辐射环境模拟与效应国家重点实验室, 西安 710024 |
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| 基金项目： | 强脉冲辐射环境模拟与效应国家重点实验室基金(批准号:SKLIPR1207)资助的课题~~ |
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| 摘 要： | 研究了金属表面电子发射阈值的测量原理.以待测材料为阴极,以法拉第筒作为阳极收集电子.在"晨光号"加速器上,测量了不同粗糙度的304L不锈钢和铝表面电子发射阈值及经表面涂覆工艺处理后这两种电极材料表面电子发射阈值.研究发现:电极表面磨光可以抑制电子发射,随着粗糙度的增加,电子发射阈值降低;金属表面涂覆对抑制电子发射效果更为显著,电子发射阈值增加了一倍.
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| 关 键 词： | 场致发射 阈值 法拉第筒 “晨光号”加速器 |
| 收稿时间： | 2013-11-29 |
Preliminary experimental research of electron emission characteristics on surface area of two kinds of electrodes |
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| Su Zhao-Feng,Yang Hai-Liang,Zhang Peng-Fei,Lai Ding-Guo,Guo Jian-Ming,Ren Shu-Qing,Wang Qiang.Preliminary experimental research of electron emission characteristics on surface area of two kinds of electrodes[J].Acta Physica Sinica,2014,63(10):106801-106801. |
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| Authors: | Su Zhao-Feng Yang Hai-Liang Zhang Peng-Fei Lai Ding-Guo Guo Jian-Ming Ren Shu-Qing Wang Qiang |
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| Abstract: | The principle of measuring electron emission threshold of surface area metal electrode is presented. The measurement system of electron emission thresholds of two electrodes is developed. The electron emission characteristics of materials with different roughness degrees or Cr2O3 coating-deposit 40 um are measured in “Chenguang” accelerator. The results show that polishing can suppress electron emission. The higher the roughness degree of material, the lower the electron emission threshold is. Material coated with Cr2O3 has higher electron emission threshold than polished material.
Keywords：
field emission
threshold
Faraday cup
“Chenguang” accelerator |
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| Keywords: | field emission threshold Faraday cup “Chenguang” accelerator |
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