离子发动机加速栅极腐蚀深度的DFF测量与数值模拟

刘畅; 汤海滨; 张振鹏; 姜志国; 顾左; 李娟

离子发动机加速栅极腐蚀深度的DFF测量与数值模拟

1.
北京航空航天大学宇航学院, 北京 100083
2.
兰州物理研究所, 兰州 730000

基金项目: 国家自然科学基金(50306001)

计量
- 文章访问数: 1686
- HTML浏览量: 2
- PDF量: 477
- 被引次数: 0
出版历程
- 收稿日期: 2007-03-19
- 修回日期: 2007-06-07
- 刊出日期: 2008-03-28

Numerical simulation and DFF measurement of ion thruster accelerator grid erosion depth

1.
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2.
Lanzhou Institute of Physics, Lanzhou, 730000, China

摘要

摘要: 使用聚焦深度表面测量(DFF)方法对加速栅极下游表面腐蚀深度进行了测量,并将测量结果与数值模拟结果进行了比较,所使用的数值方法为PIC-Monte Carlo方法.利用数值模拟程序对离子发动机栅极腐蚀进行了数值模拟.以氙为推进剂,栅极材料为钼.用蒙特卡罗方法模拟了氙离子与中性氙原子之间的电荷交换碰撞.模拟得到了加速栅极下游表面离子溅射腐蚀的深度分布,腐蚀模式与"Pits and grooves"模式相吻合.
- 航空、航天推进系统 /
- 栅极 /
- 腐蚀 /
- 溅射 /
- 聚焦深度表面测量
Abstract: Particle simulation of ion thruster grids was carried out via particle-in-cell(PIC) method and numerical method for calculating the erosion depth of the accelerator grid downstream surface was developed.Xenon was used as propellant and Molybdenum was used as grid material.Monte Carlo method was adopted to simulate the charge exchange collisions between Xenon ions and atoms.Distribution of erosion depth of the downstream surface of accelerator grid was obtained,and the erosion pattern agreed with the "pits and grooves" erosion pattern.Depth from focus(DFF)method was used to measure the erosion depth of the downstream surface of the accelerator grid and comparison between the measured and calculated erosion depth was carried out.
- aerospace propulsion system /
- grids /
- erosion /
- sputtering /
- depth from focus(DFF)

HTML

参考文献(11)

[1]	Peng X,Keefer D,Ruyten W M.Plasma particle simulation of electrostatic ion thrusters[J].Journal of Propulsion and Power,1992,8(2):361-366.
[2]	Okawa Y,Takegahara H.Numerical study of beam extraction phenomena in ion thruster[J].Japanese Journal of Applied Physics,2001,40(1):314-321.
[3]	Wang J,Polk J,Brophy J,et al.Three-dimensional particle simulations of ion-optics plasma flow and grid erosion[J].Journal of Propulsion and Power,2003,19 (6):1192-1199.
[4]	Emhoff J W,Boyd I D.Modeling of total thruster performance for NASA's evolutionary Xenon thruster ion optics[J].Journal of Propulsion and Power,2006,22 (4):741-748.
[5]	刘畅,汤海滨,顾左,等.考虑电荷交换的三维离子发动机栅极粒子模拟[J].推进技术,2006,27(5):464-468.LIU Chang,TANG Haibin,GU Zuo,et al.Three dimensional particle simulation of ion thruster grids with charge exchange[J].Journal of Propulsion and Power,2006,27(5):464-468.
[6]	李娟.20 cm氙离子推力器离子光学系统的设计与实验研究[D].兰州:中国空间技术研究院兰州物理研究所,2005.LI Juan.A design and an experimental study of ion optic system on 20 cm Xenon ion thruster[D].Lanzhou:Lanzhou Institute of Physics,China Academy of Space Technology.2005.
[7]	姜志国,史文华,韩冬兵,等.基于聚焦合成显微三维成像系统[J].CT理论与应用研究,2004,13(4):9-15.JIANG Zhiguo,SHI Wenhua,NAN Dongbing,et al.Three-dimensional microscopy image system based on depth from focus[J].Computerized Tomography Theory and Applications,2004,13(4):9-15.
[8]	Birdsall C K,Langdon A B.Plasma physics via computer simulation[M].New York:McGraw-Hill,1985.
[9]	熊家贵,王德武.考虑电荷交换的RF共振离子引出方法的模拟[J].清华大学学报(自然科学版),2000,40(10):1-4.XIONG Jiagui,WANG Dewu.Simulation of ion extraction by RF resonance method with charge exchange[J].Journal of Tsinghua University (Science & Technology),2000,40(10):1-4.
[10]	Aston G,Wibur P J.Ion extraction from a plasma[J].Journal of Applied Physics,1981,52(4),2614-2626.
[11]	Soulas G C.Design and performance of 40 cm ion optics[C]//27th International Electric Propulsion Conference.Pasadena,California:2001,IEPC 01-90.