中国电机工程学报2024，Vol.44Issue(8)：3347-3358,封3,13.DOI:10.13334/j.0258-8013.pcsee.223049
基于场致二次谐波的大气压脉冲流注放电时变非均匀电场测量研究
Time-varying Non-uniform Electric Field Measurement of Atmospheric-pressure Pulsed Streamer Discharge Based on Electric Field Induced Secondary Harmonic
摘要
Abstract
Spatial electric field diagnostics of atmospheric-pressure pulsed streamer discharges are crucial for accurately modulating streamer discharge characteristics and unveiling plasma instability mechanisms.The electric field induced secondary harmonic method has advantages of non-intrusiveness and high spatial-temporal resolution.However,effects of time-varying non-uniform electric field on the secondary harmonic generation are unclear.Meanwhile,the actual electric field calibration factor may be dependent on the streamer discharge stages.Secondary harmonic signal generation and effects of the external electric field profile are analyzed.Sensitivities of the secondary harmonic signal on the time-varying non-uniform electric fields of different streamer discharge stages are analyzed based on the plasma fluid modelling.Furthermore,based on the nanosecond pulsed laser secondary harmonic generation measurement platform,spatial axial electric field evolutions of single repetitively pulsed negative streamer are experimentally obtained in a combined electrode structure.Effects of the pulse repetition frequency on the spatial electric field are unveiled.Several suggestions of improving E-FISH measurement are proposed based on time-varying non-uniform electric fields of streamer discharges.关键词
流注放电/空间电场/电场测量/场致二次谐波/脉冲放电Key words
streamer discharge/spatial electric field/electric field measurement/electric field induced secondary harmonic(E-FISH)/pulsed discharge分类
数理科学引用本文复制引用
赵政,郑昕雷,黄宗泽,郭雨林,孙安邦,李江涛..基于场致二次谐波的大气压脉冲流注放电时变非均匀电场测量研究[J].中国电机工程学报,2024,44(8):3347-3358,封3,13.基金项目
国家自然科学基金项目(52107164,52077168) （52107164,52077168）
中央高校基本科研业务费项目(xzy012021015) （xzy012021015）
中国博士后科学基金项目(2021M702568). Project Supported by National Natural Science Foundation of China(52107164,52077168) （2021M702568）
Fundamental Research Funds for the Central Universities(xzy012021015) （xzy012021015）
China Postdoctoral Science Foundation(2021M702568). （2021M702568）
