强激光与粒子束, 2013, 25 (2): 269, 网络出版: 2013-01-07
重复频率爆炸发射阴极现状及展望
Status and prospect of repetitive explosive emission cathodes
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 repetitive explosive emission cathode flash radiography flashover LaB6 metalspoked ceramic compound cathode
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。
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 (metalspoked ceramic compound cathode) is designed.
马勋, 邓建军, 姜苹, 刘宏伟, 李洪涛. 重复频率爆炸发射阴极现状及展望[J]. 强激光与粒子束, 2013, 25(2): 269. Ma Xun, Deng Jianjun, Jiang Ping, Liu Hongwei, Li Hongtao. Status and prospect of repetitive explosive emission cathodes[J]. High Power Laser and Particle Beams, 2013, 25(2): 269.