μs前沿百kV激光触发水开关的实验研究 |
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引用本文: | 张信军,吴撼宇.μs前沿百kV激光触发水开关的实验研究[J].强激光与粒子束,2015,27(4):045009. |
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作者姓名: | 张信军 吴撼宇 |
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作者单位: | 1.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 71 0024 |
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摘 要: | 开展了百kVμs前沿脉冲作用下激光触发水开关的研究。水开关采用球板电极结构,球头轴向开激光通孔,高压极为平板电极。开关自击穿电压133kV,抖动263ns。实验研究了激光击穿弧长占据间隙不同比例、不同触发能量和不同触发时刻等因素对触发抖动的影响。结果表明激光触发可将抖动有效减小到30ns以内。触发能量高于19mJ时触发抖动与能量大小关系不大。
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关 键 词: | 激光触发 水开关 抖动 击穿时延 |
收稿时间: | 2014-12-11 |
Investigation of laser-triggered water switch under 130 kV microsecond rise-time pulse |
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Affiliation: | 1.State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,P.O.Box 69-10,Xi’an 710024,China |
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Abstract: | Experiments about the laser-triggered water switch under microsecond rise-time pulse were done. Relation between the jitter of trigger breakdown delay time and the length of laser-induced water breakdown arc, laser energy and trigger time was researched. A water gap was designed for these experiments. The gap has two electrodes, one is a hemispheroid and the other is a plate. A hole in the hemispheroid electrode is designed for the laser. From self-breakdown experiments results, self-breakdown voltage of the water switch is about 133 kV, and jitter of self-breakdown delay time is about 263 ns. The jitter of breakdown delay time was reduced to less than 30 ns by laser-triggering. The laser energy has little influence on the jitter of breakdown delay time when the energy is higher than 19 mJ in the experiments. |
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