个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:Professor Dr. Hongbin Ding
其他任职:物理学院学术委员会主任,等离子体联合研究中心主任,中国光学工程学会LIBS专委会副主任, 中国核学会核聚变等离子体分会常务理事,辽宁省物理学会副理事长,国际ITER-ITPA 委员
性别:男
毕业院校:巴塞尔大学
学位:博士
所在单位:物理学院
学科:等离子体物理. 光学工程
联系方式:hding@dlut.edu.cn
电子邮箱:hding@dlut.edu.cn
Diagnosis of Electron, Vibrational and Rotational Temperatures in an Ar/N-2 Shock Plasma Jet Produced by a Low Pressure DC Cascade Arc Discharge
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论文类型:期刊论文
发表时间:2013-09-01
发表刊物:PLASMA SCIENCE & TECHNOLOGY
收录刊物:SCIE、EI、Scopus
卷号:15
期号:9
页面范围:875-880
ISSN号:1009-0630
关键字:DC arc torch; plasma jet; shock wave; electron temperature; vibrational temperature; rotational temperature; emission spectral diagnosis
摘要:In this paper, a low pressure Ar/N-2 shock plasma jet with clearly multicycle alternating zones produced by a DC cascade arc discharge has been investigated by an emission spectral method combined with Abel inversion analysis. Plasma emission intensity, electron, vibrational and rotational temperatures of the shock plasma have been measured in the expansion and compression zones. The results indicate that the ranges of the measured electron temperature, vibrational temperature and rotational temperature are 1.1 eV to 1.6 eV, 0.2 eV to 0.7 eV and 0.19 eV to 0.22 eV, respectively, and it is found for the first time that the vibrational and rotational temperatures increase while the electron temperature decreases in the compression zones. The electron temperature departs from the vibrational and the rotational temperatures due to non-equilibrium plasma effects. Electrons and heavy particles could not completely exchange energy via collisions in the shock plasma jet under the low pressure of 620 Pa or so.