金属-铁电陶瓷沿面阴极三相点电场分析

摘要

为了降低金属-铁电陶瓷沿面阴极发射阈值，开展了影响其三相点电场分布因素的研究。从金属铁电陶瓷结构参数、在二极管中的相对位置出发分析了其与三相点电场关系。研究表明采用较薄的电极和铁电陶瓷，以及较短的沿面距离可以获得三相点电场的加强，相比双电极结构，单电极可以获得显著的三相点电场畸变。%In order to decrease metal-ceramic flashover cathode’s electron emission voltage, it is essential to study the factors which affect the cathode triple joint’s electric field. Analyze the relations between electric field and cathode’s configuration, diode’s framework, and so on. The results show means of increasing triple joint electric filed include that thinning metal electrode and ceramic, shorting flashover distance, replacing double metal electrode with single electrode.