Influence of External Electric Field and Pre-ionization on Characteristics of Discharge Plasma in High-power Xenon Flashlamp

作     者：LIU Jianjun LI Haibing HU Lili LI Xingwen YANG Zefeng JIA Shenli e 

作者机构：Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an 710049 China 

出 版 物：《高电压技术》 (High Voltage Engineering)

年 卷 期：2013年第39卷第9期

页      面：2267-2272页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0803[工学-光学工程] 

基　　金：Project supported by Special Defense Program 

主　　题：放电等离子体 等离子体特性 大功率脉冲 氙闪光灯 预电离 外电场 等离子体通道 CCD摄像机 

摘      要：This work is devoted to experimentally study the characteristics of discharge plasma in high power xenon *** the experiments,plasma channel profiles are captured by using a high speed CCD camera,and the radiation energy of the flashlamp is obtained by a pyroelectric energy *** and current curves are recorded to shed light on the plasma *** these diagnostic methods,typical factors influencing the evolution process of plasma channel are studied,including the external electric field and the *** electric potential distribution in the flashlamp influence the plasma channel characteristics the most *** plasma channel pattern for the cases with grounded wires is different from that with ungrounded metal *** the wire is ungrounded,it is the coupling voltage between the metal wire and the flashlamp that influences the development of plasma *** terms of radiation efficiency,it is proven that there is an optimal interval within 200～300μs between the pre-ionization pulse and the main pulse.