阳极层霍尔推力器的阳极分段形式对内磁极刻蚀速率的影响

推力器内径向电势和等离子体的分布会影响轰击推力器器壁的离子运动,本文通过阳极的不同分段形式来改变推力器内电势分布,进而研究推力器阳极的不同分段形式对内磁极刻蚀速率分布的影响.利用等离子体注入控制技术(PIC)方法研究了入射离子的数量和能量分布,对内磁极内表面和上表面的刻蚀速率进行仿真计算.由结果可知:入射到内磁极两个面...

Effects of Anode Segmented Form of Anode Layer Hall Thruster on Etching Rate of Inner Magnetic Pole

Because the movement of ions bombarding the thruster wall is affected by the radial potential and the plasma distribution. In this paper, the potential distribution in the thruster is changed by different segments of the anode, and then the etching rate distribution of the internal magnetic pole is studied by different segments of the anode. First, PIC method is used to study the number and energy distribution of the incident ions, and then the etching rate of the inner and upper surfaces of the inner pole is simulated. It can be seen from the results that the number and energy of the ions incident on the two sides of the inner magnetic pole reach the maximum value when the anode is divided into three sections, while the other three cases are relatively low. The etching rate of the inner and upper surface of the inner pole is also the highest in three section anode, followed by single anode, and the lowest in two and four section anode. Finally, by comparing the experimental results of the time corrosion rate of single anode and two segmented anode, the correctness of the research results is verified, which provides reference data and research methods for the next step of improving the life of thruster.