摘要
基于对爆炸发射点火机制的分析,提出了介质增强场致爆炸发射的设想,研制并实验研究了金属-介质复合阴极的电子发射特性;同时,基于对表面闪络爆炸发射机制的分析,研制出了石墨-碳纤维复合阴极并进行了初步实验研究。研究结果表明,金属-介质复合阴极与石墨-碳纤维复合阴极电子发射密度均超过17 kA/cm2,使用寿命预计超过105次。
Based on the study of explosive emission, the dielectric enhancement electric-field emission model is brought forward, and the metal-dielectric complex cathode material is manufactured. Based on the investigation of surface-flash explosive emission, the graphite-carbon fiber complex cathode is manufactured. Then the experiments are developed respectively, and the result shows the electron emission density of these two complex cathode materials is more than 17 kA/cm^2 , and their lifetime is more than 10^5 pulses.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2008年第5期863-866,共4页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
关键词
阴极
场致增强爆炸发射
碳纤维
强流电子束
表面闪络
Cathode
Dielectric enhancement electric-field explosive emission
Carbon fiber
Intense electron-beam
Surface flashover
