氧化物阴极的应用研究及发展  

The Application Research and Development of Oxide Cathode

作　　者：廖显恒[1] 王小霞[1] 赵青兰[1] 李云[1] 

机构地区：[1]中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室,北京100190

出　　处：《微波学报》2010年第S1期534-538,共5页Journal of Microwaves

摘　　要：氧化物阴极是真空器件应用最广泛的热阴极,为了满足微波器件向高功率、宽频带、长寿命等技术要求的持续发展,提高氧化物阴极的直流及宽脉冲发射电流密度、增强它的稳定可靠性一直是氧化物阴极应用研究的主题。本文主要论述氧化物阴极电子发射过程、分析氧化物阴极存在问题根源及解决的方法,研制出新型氧化物阴极,给出了阴极直流、脉冲、寿命性能以及在高功率速调管和行波管的应用,展望了它的应用前景。Oxide cathode has been the most widely used in vacuum devices as an electrons emission source.In order to adapt the durative development of microwave devices to high power,wide frequency and long lifetime,a great deal of efforts has been devoted to search for the large emission current and high reliability oxide cathode.In this paper,we discussed the emission process of oxide cathode,the problem of conventional oxide cathode and the resolve method.So a new type of oxide cathode is developed and its DC and PC emission properties,lifetime and applications in TWTs and klystrons are studied,which indicates that oxide cathode have research potential and good applications prospects.

关 键 词：氧化物阴极 应用研究 发射性能 微波管 

分 类 号：O462[理学—电子物理学]