| 电火箭空心阴极发射体寿命研究 |
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| 引用本文： | 马占华,汪南豪.电火箭空心阴极发射体寿命研究[J].上海航天,2002,19(5):60-62. |
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| 作者姓名： | 马占华 汪南豪 |
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| 作者单位： | 上海航天技术研究院801所,上海,200233 |
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| 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，指出知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，还讨论了工质气体纯度和真空环境对发射体寿命的影响。
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| 关 键 词： | 电火箭 空心阴极 内发射体 使用寿命 |
| 文章编号： | 1006-1630(2002)05-0060-03 |
| 修稿时间： | 2001年5月22日 |
The Emitter Life Research of Hollow Cathode in Electric Rocket |
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| MA Zhan,hua,WANG Nan,hao.The Emitter Life Research of Hollow Cathode in Electric Rocket[J].Aerospace Shanghai,2002,19(5):60-62. |
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| Authors: | MA Zhan hua WANG Nan hao |
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| Abstract: | 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. |
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| Keywords: | Electric rocket Hollow cathode Internal emitter Life |
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