瞬变等离子体微波诊断初步研究  

Preliminary study of microwave diagnostics for transient plasma

作　　者：闫二艳[1,2] 杨浩 郑强林[1] 鲍向阳[1] 胡海鹰 何琥[1,2] 刘忠[1] Yan Eryan;Yang Hao;Zheng Qianglin;Bao Xiangyang;Hu Haiying;He Hu;Liu Zhong(Institute of Applied Electronics,CAEP,P.O.Box 919-1015,Mianyang 621900,China;Science and Technology on High Power Microwave Laboratory,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900 [2]高功率微波技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2019年第10期41-45,共5页High Power Laser and Particle Beams

基　　金：高功率微波技术重点实验室基金项目(JCKYS2018212036)

摘　　要：采用微波诊断技术对气压300 Pa,S波段HPM条件下形成的低温、弱电离、非均匀和强碰撞大气等离子体特性参数开展了初步诊断研究。获取了9~15 GHz连续波穿过HPM等离子体区域的透射波形,并对波形进行了归一化处理;通过不同频率微波的透射特性,假设等离子体电子数密度分布呈Epstein分布,分析了可能的电子数密度最大值。该研究成果的获取为HPM大气等离子体在隐身、阻断信息链等方面的应用提供了重要的技术支撑。Plasma characteristic is studied under conditions of microwave discharge in air with the microwave diagnostics technology.The plasma is cold,weakly ionized,no-uniform and collision with S band high power microwave.The transmission waveform with 9-15 GHz continuous wave passing the plasma region and pressure of 300 Pa is obtained and normalized.A discussion on the effect of various plasma parameters on transmitted power is presented.A parabolic plasma density profile is assumed across the Epstein Profile Model.The maximum plasma electron density is obtained by transmission waveform of various frequency.Characteristic study of microwave passing through the strong collision plasma provides significant technology support to applications of stealth technique and information blockage.

关 键 词：高功率微波 等离子体 微波诊断 电子数密度 大气击穿 

分 类 号：O536[理学—等离子体物理] O441.4[理学—物理]