LaB6阴极的制备、应用与展望

LaB₆阴极的制备、应用与展望

徐跃凡,茹亚东,左婷婷,伍 岳,王鹏飞,刘俊标,高召顺^*,韩 立,肖立业    

（1. 中国科学院电工研究所，北京100190；2. 中国科学院大学，北京100049）

摘  要 六硼化镧（LaB₆）阴极作为一种优异的热发射电子源，应用领域广泛，是高端电子束仪器及设备的关键元器件。本文系统介绍了LaB₆材料的制备和加工方法、阴极常见的装卡方式，总结了其在各领域应用现状，并对其发展前景进行了展望。

关键词 LaB₆；单晶；阴极器件；电子束设备

中图分类号：O462；O614.331；O786  文献标识码：A       doi:10.3969/j.issn.1000-6281.2024.02.015

Preparation, application and prospect of LaB₆ cathodes

XU Yuefan^1，2,  RU Yadong¹,  ZUO Tingting¹,  WU Yue¹,  WANG Pengfei¹  LIU Junbiao¹, 

GAO Zhaoshun^1*,  HAN Li¹  XIAO Liye¹

(1. Institute of Elctrical Engineering, Chinese Academy of Sciences, Beijing 100190;2. University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract  As a fantastic thermal emission electron source,lanthanum hexaboride (LaB₆) cathode has a wide range of applications and is a key component in advanced electron beam instruments and equipments. This paper systematically reviews the preparation and processing methods of LaB₆ materials, the common mounting methods, its present application and prospect.

Keywords   LaB₆; single crystal; cathode; electron beam equipment

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