航天器环境工程2018，Vol.35Issue(3)：241-246,6.DOI:10.3969/j.issn.1673-1379.2018.03.007
原子氧环境对空心阴极影响的地面模拟试验研究
Ground experiment for influence of atomic oxygen environment on hollow cathode
冯杰 1刘明正 1王彦龙 1陈新伟 1王蒙 1杨俊泰 1田立成1
作者信息
- 1. 兰州空间技术物理研究所 真空技术与物理重点实验室,兰州 730000
- 折叠
摘要
Abstract
To study the influence of atomic oxygen on the LaB6 hallow cathode, the LHC-5 hollow cathode is placed in the atomic oxygen test facility with repeated ignitions, and with the tungsten-rhenium 5-26 thermocouple to measure the temperature of the cathode tube. After the test, the hollow cathode is inspected, and the cathode tube appears to be expanded and cracked. The XPS analysis of the cross section shows that the failure of the cathode tube is caused by oxidation. Therefore, protective measures should be taken for LHC-5-type hollow cathode ion thrusters, the Hall thrusters and the plasma contactors in LEO under atomic oxygen attack, and a correct shutdown strategy is essential for ensuring the normal work of the cathode.关键词
空心阴极/阴极管/氧化/低地球轨道/X射线光电子能谱Key words
hollow cathode/cathode tube/oxidation/low Earth orbit (LEO)/XPS分类
数理科学引用本文复制引用
冯杰,刘明正,王彦龙,陈新伟,王蒙,杨俊泰,田立成..原子氧环境对空心阴极影响的地面模拟试验研究[J].航天器环境工程,2018,35(3):241-246,6.
