摘要
分析了影响电火箭空心阴极发射体寿命的各种因素。论述了空心阴极放电时 ,其内部化学反应生成物的迁移、扩散、蒸发和溅射。讨论了发射体发射材料的损耗速率与温度的关系 ,指出适度降低发射体的工作温度是延长空心阴极寿命的有效措施。
The emitter life of hollow cathode was studied. While hollow cathode being discharged, migration, diffusion, evaporation and sputtering of reaction products were analyzed. The relation of emission expense rate to temperature was discussed. To low operation temperature of emitter was an effective way to prolong the hollow cathode life. Propellant purity and environment that affected the emitter life were discussed.
出处
《上海航天》
2002年第5期60-62,共3页
Aerospace Shanghai
关键词
电火箭
空心阴极
内发射体
使用寿命
Electric rocket
Hollow cathode
Internal emitter
Life
