Full Particles Simulation on the Effects of Discharge Chamber Structure on the Plasma Characteristics of Electron-Bombardment Ion Thruster

被引：0
|
作者：
Sun A. [1 ]
Yan H. [1 ]
Li H. [1 ]
机构：
[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2021年 / 55卷 / 07期
关键词：
Cathode placement; Discharge chamber; Electron-bombardment ion thruster; Full particles simulation; Inlet position;
D O I：
10.7652/xjtuxb202107002
中图分类号：
学科分类号：
摘要：
In order to clarify how the structure of electron-bombardment ion thruster influences the thruster properties like thrust, impulse and so on, a two-dimensional axial symmetry full particles numerical model is established based on the PIC/MCC method to carry out research on the plasma characteristics in a 10 cm×5 cm cylindrical discharge chamber. The simulation results show that the discharge chamber with double inlets has better performance than that with a single inlet on ionization rate, thrust, impulse and discharge loss except ion density distribution at the exit. As the cathode length increases, the ion reflux can be weakened and the macroscopic properties are better. However, when the cathode length is much longer, it would reduce the ionization rate. The cathode length in the range between 4 and 5 cm is optimal for the thruster. According to the simulation, the influences of different propellant inlet positions and cathode placement on the plasma characteristics and thruster performance are considered, which can provide a general reference for the actual design of discharge chambers. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：12 / 20
页数：8
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