Numerical study of the radio-frequency biased accelerating system in ion thrusters

doi:10.1088/2058-6272/acbef4

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

	Numerical study of the radio-frequency biased accelerating system in ion thrusters
	Bai, Jinwei ; Cao, Yong ; LI, Yang ; Wang, Kaifa ; Tian, Bin ; Hu Y(胡远)
刊名	PLASMA SCIENCE & TECHNOLOGY ; 8
	2023-08
卷号	25 页码:85502
关键词	ion thruster radio-frequency biased grids implicit immersed-finite-element particle-in-cell plasma plume
ISSN号	1009-0630
DOI	10.1088/2058-6272/acbef4
英文摘要	A 2D-3V implicit immersed-finite-element particle-in-cell (IFE-PIC) model is introduced to investigate the radio-frequency (RF) self-bias accelerating system applied in the RF ion thruster. A set of holes in a two-grid system with slit apertures is simulated in Cartesian coordinates. The characteristics of the plasma plume, such as the ion density, the neutralization rate and the ion and electron current density were investigated for different RF voltage amplitudes (600-1200 V) and frequencies (6-30 MHz). Furthermore, the performance of the thruster was also carefully studied. The simulation results show that a well-focused plasma beam can be formed when the voltage amplitude is larger than 900 V and the frequency exceeds the reciprocal of ion transit time (>= 12 MHz) in our simulation cases. The performance of the system can be evidently improved by increasing the voltage amplitude and the frequency, and the losses of the particle and thrust are reduced correspondingly. The bulk region of the plasma beam downstream shows good quasi-neutrality, and the ions are dominant in the peripheral region when a well-focused state is achieved. The high ion density beamlet in the periphery of the ion beam is closer to the axis when the voltage amplitude is increasing, while it is expanded radially when increasing the frequency. Backstream electrons have been observed upstream, and this mainly occurs in the phase in which the electron cannot escape.
分类号	Q3
WOS研究方向	WOS:000975957400001
语种	英语
资助机构	China Postdoctoral Science Foundation [2022M710977] ; National Natural Science Foundation of China [51907039] ; Natural Science Foundation of Guangdong Province [2022A1515110215, 2023A1515010137] ; Shenzhen Technology Projects [JCYJ20190806142603534, ZDSYS201707280904031]
其他责任者	Tian, B ; Hu, Y
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92256]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.(Hu Yuan) Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 2.(Tian Bin) Univ Elect Sci & Technol China Sch Aeronaut & Astronaut Chengdu 611731 Peoples R China 3.(Cao Yong, LI Yang, Tian Bin) Harbin Inst Technol Shenzhen Sch Mech Engn & Automat Shenzhen 518055 Peoples R China 4.(Bai Jinwei, Wang Kaifa) Harbin Inst Technol Shenzhen Sch Sci Shenzhen 518055 Peoples R China
推荐引用方式 GB/T 7714	Bai, Jinwei,Cao, Yong,LI, Yang,et al. Numerical study of the radio-frequency biased accelerating system in ion thrusters[J]. PLASMA SCIENCE & TECHNOLOGY, 8,2023,25:85502.
APA	Bai, Jinwei,Cao, Yong,LI, Yang,Wang, Kaifa,Tian, Bin,&胡远.(2023).Numerical study of the radio-frequency biased accelerating system in ion thrusters.PLASMA SCIENCE & TECHNOLOGY,25,85502.
MLA	Bai, Jinwei,et al."Numerical study of the radio-frequency biased accelerating system in ion thrusters".PLASMA SCIENCE & TECHNOLOGY 25(2023):85502.