个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:物理学院
学科:等离子体物理
办公地点:等离子体科学与工程研究中心(新三束3号楼203)
电子邮箱:songjian@dlut.edu.cn
Role of ambient dielectric in propagation of Ar atmospheric pressure nonequilibrium plasma jets
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论文类型:期刊论文
发表时间:2021-03-24
发表刊物:PHYSICS OF PLASMAS
卷号:22
期号:5
ISSN号:1070-664X
摘要:A single-electrode atmospheric pressure nonequilibrium plasma jet surrounded with different ambient dielectrics is investigated driven by AC power supply. Another three ambient dielectrics, distilled water, ethanol, and carbon tetrachloride, are adopted to compare with air. By examining electrical and optical characteristics, it was found that the molecular polarity of ambient dielectrics had its significant effect on the propagation of atmospheric pressure nonequilibrium plasma jets. When the polarization of molecules was enhanced, the discharge current and the bullet velocity were also increased. For nonpolar dielectric of carbon tetrachloride, this was mainly resulted from the electron polarization in the built-in electric field. For polar dielectrics of ethanol and distilled water, in addition to the electron polarization, orientation polarization was the main cause for the further increase in discharge current and bullet velocity. (C) 2015 AIP Publishing LLC.