The distribution pattern of the electron density and the electron temperature in a weakly compressible argon plasma jet measured by a Langmuir triple probe

doi:10.1088/1361-6595/ac5c5e

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	The distribution pattern of the electron density and the electron temperature in a weakly compressible argon plasma jet measured by a Langmuir triple probe
	Cao, Jinwen 1,2; Meng, Xian 2; Han, Ning 1,2; Pan, Wenxia 1,2; Wu, Chengkang 1,2; Huang, Heji 1,2
刊名	PLASMA SOURCES SCIENCE & TECHNOLOGY
	2022-04-01
卷号	31 期号:4 页码:15
关键词	high-speed plasma electron density electron temperature triple probe expansion-compression nonequilibrium weakly compressible
ISSN号	0963-0252
DOI	10.1088/1361-6595/ac5c5e
通讯作者	Huang, Heji(huang@imech.ac.cn)
英文摘要	High-speed plasma plays an important role in diverse areas. Plasma flow with a sufficiently high speed to arouse compression is usually not in thermal equilibrium, and the plasma characteristics are closely coupled with the flow field. The relation between the flow and the plasma parameters, especially the distributions of electron density, i.e. n (e), and the electron temperature, i.e. T (e), are of ultimate importance; however, this is not yet completely understood. In this work, a weakly compressible plasma jet produced by an arc torch is diagnosed using a Langmuir triple probe. The two-dimensional distributions of n (e) and T (e) are obtained consisting of 80 spatial points under arc currents of 70-100 A. The spatial patterns of the distributions demonstrate alternative expansion-compression wave structures. As the arc power increases, the wave structures remain almost unchanged, while n (e) increases monotonically. Moreover, in some regions T (e) decreases with the arc power, which has seldom been reported in the literature. In addition, the peaks of the radial distributions of T (e) always deviate from the central axis. These results are compared with previous works of strongly compressible plasma flows. The phenomena are then analyzed and explained from the perspective of fluid wave-plasma interactions and the actions of the ambipolar field in the electrons.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA17030100] ; National Natural Science Foundations of China[11735004] ; National Natural Science Foundations of China[11575273] ; Hainan Province Science and Technology Special Fund[ZDKJ2019004] ; LHD Youth Innovation Fund from the State Key Laboratory of High Temperature Gas Dynamics
WOS关键词	SAHA EQUATION ; THERMODYNAMIC DERIVATION ; FLOW ; TORCH
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000793494500001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundations of China ; Hainan Province Science and Technology Special Fund ; LHD Youth Innovation Fund from the State Key Laboratory of High Temperature Gas Dynamics
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89369]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Huang, Heji
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Cao, Jinwen,Meng, Xian,Han, Ning,et al. The distribution pattern of the electron density and the electron temperature in a weakly compressible argon plasma jet measured by a Langmuir triple probe[J]. PLASMA SOURCES SCIENCE & TECHNOLOGY,2022,31(4):15.
APA	Cao, Jinwen,Meng, Xian,Han, Ning,Pan, Wenxia,Wu, Chengkang,&Huang, Heji.(2022).The distribution pattern of the electron density and the electron temperature in a weakly compressible argon plasma jet measured by a Langmuir triple probe.PLASMA SOURCES SCIENCE & TECHNOLOGY,31(4),15.
MLA	Cao, Jinwen,et al."The distribution pattern of the electron density and the electron temperature in a weakly compressible argon plasma jet measured by a Langmuir triple probe".PLASMA SOURCES SCIENCE & TECHNOLOGY 31.4(2022):15.