Hybrid–PIC simulation of sputtering product distribution in a Hall thruster

Xifeng CAO (曹希峰); Guanrong HANG (杭观荣); Hui LIU (刘辉); Yingchao MENG (孟颖超); Xiaoming LUO (罗晓明); Daren YU (于达仁)

doi:10.1088/2058-6272/aa7940

Plasma Science and Technology > 2017 > 19(10): 105501. > DOI: 10.1088/2058-6272/aa7940

Xifeng CAO (曹希峰), Guanrong HANG (杭观荣), Hui LIU (刘辉), Yingchao MENG (孟颖超), Xiaoming LUO (罗晓明), Daren YU (于达仁). Hybrid–PIC simulation of sputtering product distribution in a Hall thruster[J]. Plasma Science and Technology, 2017, 19(10): 105501. DOI: 10.1088/2058-6272/aa7940

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Hybrid–PIC simulation of sputtering product distribution in a Hall thruster

1 Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology (HIT), Harbin 150001, People’s Republic of China 2 Shanghai Institute of Space Propulsion, Shanghai 201112, People’s Republic of China

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Received Date: May 14, 2017

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Abstract

Abstract

Hall thrusters have been widely used in orbit correction and the station-keeping of geostationary satellites due to their high specific impulse, long life, and high reliability. During the operating life of a Hall thruster, high-energy ions will bombard the discharge channel and cause serious erosion. As time passes, this sputtering process will change the macroscopic surface morphology of the discharge channel, especially near the exit, thus affecting the performance of the thruster. Therefore, it is necessary to carry out research on the motion of the sputtering products and erosion process of the discharge wall. To better understand the moving characteristics of sputtering products, based on the hybrid particle-in-cell (PIC) numerical method, this paper simulates the different erosion states of the thruster discharge channel in different moments and analyzes the moving process of different particles, such as B atoms and B⁺ ions. In this paper, the main conclusion is that B atoms are mainly produced on both sides of the channel exit, and B⁺ ions are mainly produced in the middle of the channel exit. The ionization rate of B atoms is approximately 1%.
- Hall thruster,
- sputtering erosion,
- hybrid–PIC

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References (21)

References

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