| 粗糙阴极气体火花开关性能的理论研究 |
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| 引用本文： | 吕志忠,吕治辉,高娅娜,钟功祥,蒋发光.粗糙阴极气体火花开关性能的理论研究[J].强激光与粒子束,2010,22(6). |
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| 作者姓名： | 吕志忠 吕治辉 高娅娜 钟功祥 蒋发光 |
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| 作者单位： | 1. 西南石油大学 机电学院， 成都 610050;2. 国防科学技术大学 理学院， 长沙 410073;3. 湖南稀土金属材料研究院， 长沙 410014 |
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| 基金项目： | 西南石油大学"石油天然气装备"教育部重点实验室基金资助课题 |
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| 摘 要： | 提出了粗糙阴极的气体火花开关击穿模型,通过粗糙层厚度和场强增强系数对阴极粗糙度进行了描述,利用概率论研究开关的击穿情况,分析了气体压强对粗糙阴极气体火花开关稳定性、击穿场强随气压的变化曲线以及开关绝缘恢复速度的影响,研究发现当阴极相对于电子平均自由程足够粗糙时,开关具有最佳的稳定性,当阴极粗糙结构尺度与电子平均自由程相当时,开关具有最佳的绝缘恢复特性。
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| 关 键 词： | 气体火花开关 粗糙度 击穿概率 稳定性 重复频率特性 |
| 收稿时间： | 1900-01-01; |
Theoretical research on properties of spark gap switch with rough cathode |
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| LV Zhizhong,LV Zhihui,Gao Yana,Zhong Gongxiang,Jiang Faguang.Theoretical research on properties of spark gap switch with rough cathode[J].High Power Laser and Particle Beams,2010,22(6). |
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| Authors: | LV Zhizhong LV Zhihui Gao Yana Zhong Gongxiang Jiang Faguang |
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| Institution: | 1. Electrical and Mechanical College, Southwest Petroleum University, Chengdu 610050, China;2. Science College, National University of Defense Technology, Changsha 410073, China;3. Hunan Rare-Earth Metal and Material Institute, Changsha 410014, China |
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| Abstract: | A model of gas spark switch with rough cathode is presented. Utilizing the rough layer thickness and electric enhancement factor to characterize the cathode roughness, the breakdown situation of gas spark switch is studied by probability theory. Influences of gas pressure on the stability, E/p (electric field strength to gas pressure) curve and insulation recovery velocity are analyzed. The study shows when the cathode is rough enough for the mean free path of electron, the switch obtain the highest stability, but when the dimension of coarse structure is close to the mean free path of electron, the switch obtain the best recovery property. |
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| Keywords: | roughness breakdown probability stability repetition property |
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