| Time Characterization of High Density Gas Jet from a Pulsed Supersonic Nozzle via Laser Produced Plasma |
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| 作者姓名： | 颜立新 张永生 马莲英 刘晶儒 程建平 吕敏 |
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| 作者单位： | [1]Department of Engineering Physics, Tsinghua University, Beijing 100084, China [2]Northwest Institute of Nuclear Technology, Xi＇an 710024, China |
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| 基金项目： | supported by the National Natural Science Foundation of China （No. 10474081） |
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| 摘 要： | A high-density gas jet supersonic nozzle is reported in this paper. The jitter and actuation time of the nozzle is determined by the pin discharge and laser spark radiation respectively. The jitter time of the nozzle is within 10μs with the backing pressure as high as 25 bar. With a nanosecond laser pulse focused on the gas jet about 1 mm below the nozzle, the actuation time is calculated to be about 15 ms by detecting the laser produced spark radiation, which reveals the existence of the gas jet and the relative gas density evolving with time. Consequently the gas density is estimated to be well above 10^19 cm^-3, compared with theoretical simulations from the nozzle parameters.
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| 关 键 词： | 超声速喷嘴 高密度气体喷嘴 激光等离子体 时间特征 |
| 收稿时间： | 2005-09-01 |
| 修稿时间： | 2005-09-01 |
Time Characterization of High Density Gas Jet from a Pulsed Supersonic Nozzle via Laser Produced Plasma |
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| YAN Lixin, ZHANG Yongsheng, MA Lianying, LIU Jingru, CHENG Jianping, LU Min.Time Characterization of High Density Gas Jet from a Pulsed Supersonic Nozzle via Laser Produced Plasma[J].Plasma Science & Technology,2006,8(4):429-432. |
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| Authors: | YAN Lixin ZHANG Yongsheng MA Lianying LIU Jingru CHENG Jianping LU Min |
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| Abstract: | |
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| Keywords: | supersonic nozzle high-density gas jet laser produced plasma |
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