重复频率微波脉冲大气击穿延时与电离率  

Atmospheric breakdown delay and ionization rate ofrepetitive microwave pulses

作　　者：杨浩[1] 郑强林[1] 黄诺慈 刘星辰 鲍向阳 闫二艳[1,2] Yang Hao;Zheng Qianglin;Huang Nuoci;Liu Xingchen;Bao Xiangyang;Yan Eryan(Institute of Applied Electronics,CAEP,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》2024年第1期18-22,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(62001442)。

摘　　要：针对高功率微波在大气传输中可能出现的击穿现象,研究了脉冲序列中首次脉冲击穿延时和后续脉冲击穿延时,研究结果发现首次脉冲击穿延时在脉宽范围内大致均匀分布,后续脉冲击穿延时波动性较小。根据击穿延时数据对电离率进行了分析,指出在重复频率条件下,初始电子密度较高,电子密度分布不适用指数分布,无法用延时数据标准差对电离率进行估计。提出了一种用重复频率脉冲击穿延时数据计算电离率的方法,并将计算结果与仿真结果进行了对比,结果显示,二者有较好的对应关系。Aiming at the possible breakdown phenomenon of high power microwave in atmospherictransmission,this paper focuses on the study of the first pulse burst delay and subsequent pulse burst delay in pulsesequences.It is found that the first pulse burst delay is approximately uniformly distributed within the pulse widthrange,and the subsequent pulse burst delay has a small jitter.The ionization rate is analyzed based on the breakdowndelay data,and it is pointed out that under the repeated frequency condition,the initial electron density is high,and theelectron density distribution is not suitable for exponential distribution,which makes it impossible to estimate theionization rate using the standard deviation of the delay data.At the end,the paper proposes a method for calculatingionization rate using repeated frequency pulse burst delay data,and compares the calculated results with the simulationresults,which have a good correspondence.

关 键 词：重复频率 微波击穿 电离率 脉冲延时 估计 

分 类 号：O531[理学—等离子体物理]