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Temporal and spatial evolution of air-spark switch plasma investigated by the Mach–Zehnder interferometer

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【Author】 Jie Huang;Lin Yang;Hongchao Zhang;Lei Chen;Xianying Wu;College of Nuclear Science and Technology, Beijing Normal University;Institute of Electronic Engineering, China Academy of Engineering Physics;Nanjing University of Science and Technology;

【通讯作者】杨林;

【机构】 College of Nuclear Science and Technology, Beijing Normal University； Institute of Electronic Engineering, China Academy of Engineering Physics； Nanjing University of Science and Technology；

【摘要】 An air-spark switch plasma was diagnosed by the Mach–Zehnder laser interferometer with ultra-high spatial and temporal resolution. The interferograms containing plasma phase shift information at different time were obtained. The phase shift distributions of the plasma were extracted by numerically processing the interferograms. The three-dimensional(3 D) electron density distributions of the air-spark switch plasma were then obtained. The working process of the air-spark switch was described by analyzing the temporal and spatial evolution of the plasma electron density.更多还原

【Abstract】 An air-spark switch plasma was diagnosed by the Mach–Zehnder laser interferometer with ultra-high spatial and temporal resolution. The interferograms containing plasma phase shift information at different time were obtained. The phase shift distributions of the plasma were extracted by numerically processing the interferograms. The three-dimensional(3 D) electron density distributions of the air-spark switch plasma were then obtained. The working process of the air-spark switch was described by analyzing the temporal and spatial evolution of the plasma electron density.更多还原

【关键词】 air-spark switch； Mach–Zehnder laser interferometer； arc channel； electron density；
【Key words】 air-spark switch； Mach–Zehnder laser interferometer； arc channel； electron density；

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2019年05期

【分类号】TH744.3;O53
【下载频次】19

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