Numerical simulation of the start-up process of a miniature ion thruster |
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| Affiliation: | 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's
Republic of China 2. Key Laboratory of Aerospace Plasma Propulsion, Ministry of Industry and Information Technology,
Harbin 150001, People's Republic of China 3.Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics,
Lanzhou 730000, People's Republic of China |
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| Abstract: | A particle-in-cell Monte Carlo collision model of a discharge chamber is established to investigate the start-up process of a miniature ion thruster. We present the discharge characteristics at different stages (the initial stage, development stage, and stable stage) according to the trend of the discharge current with time. The discharge current is the sum of the sidewall current and the backplate current. During the start-up process, the sidewall current lags behind the backplate current. The variation and distribution characteristics of the discharge current over time are determined by the electron density distribution and electric potential distribution. |
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| Keywords: | miniature ion thruster discharge chamber start-up process Monte Carlo collision |
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