Status and prospect of repetitive explosive emission cathodes
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摘要: 重复频率爆炸发射阴极(EEC)是产生高功率重复频率强流电子束的关键。阐述了爆炸发射的尖端场增强和闪络引发机制,分析了影响EEC重复频率运行的因素,综述了EEC研究现状并总结了几种EEC特性,指出实现重复频率发射阴极的方法在于探索新型材料和改进结构。提出采用六硼化镧(LaB6)作为EEC材料和适用于单焦斑多幅闪光照相工业冷阴极二极管(IXD)的新型阴极结构轮辐状金属-铁电陶瓷复合阴极,并对其前景进行展望。
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关键词:
- 重复频率爆炸发射阴极 /
- 闪光照相 /
- 闪络 /
- 六硼化镧 /
- 轮辐状金属-铁电陶瓷复合阴极
Abstract: The repetitive explosive emission cathode (EEC) is the key component of high power diode for generating repetitive electron beams. The emission mechanisms of the cathodes triggered by whiskers and flashover are introduced in detail. Factors that limit the repetition rate are analyzed. Development and characteristics of some EECs are summarized. LaB6 is proposed as EEC material and a novel configuration of cold cathodes (metal-spoked ceramic compound cathode) is designed.
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