复合阴极材料发射特性分析
Analyse of complex cathode material emission characters
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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。Abstract: 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/cm2, and their lifetime is more than 105 pulses．
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