Numerical study on an atmospheric pressure helium discharge propagating in a dielectric tube:influence of tube diameter

作     者：Zhoutao SUN Wen YAN Longfei JI Zhenhua BI Ying SONG Dongping LIU 孙洲涛;晏雯;季龙飞;毕振华;宋颖;刘东平

作者机构：School of Physics and Materials EngineeringDalian Nationalities UniversityDalian 116600People＇s Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2018年第20卷第8期

页      面：22-28页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China(Nos.11705022,11505025,11705023) Innovation and Entrepreneurship Plan of Dalian Nationalities University(school-level A+Nos.201712026380) 

主　　题：atmospheric pressure helium discharges discharge front numerical simulation 

摘      要：In this work, a two-dimensional numerical simulation of the discharge characteristics of helium plasma propagating inside a dielectric tube was performed. A trapezoidal ＋9 kV pulse lasting 400 ns was applied on a needle electrode set inside the dielectric tube to ignite the discharge. The discharges generated in the tubes with a variable or a constant inner diameter were *** focus of this study was on clarifying the effect of the tube diameter on the discharge structure and dynamics. The comparison of the discharge characteristics generated in dielectric tubes with different diameters was carried out. It was shown that the tube diameter plays a significant role in discharge behavior of plasma propagating in the dielectric tube.