单晶和多晶LaB_6阴极发射性能的实验研究  

Experimental Study on the Emission Property of the Monocrystal and Polycrystal LaB_6 Cathodes

作　　者：姚剑峰[1] 陈旭[1] 江剑平[1] 李季[2] 高玉娟[2] 阎肃秋[2] 陈其略[2] 

机构地区：[1]清华大学电子工程系,北京100084 [2]北京真空电子技术研究所,北京100016

出　　处：《真空电子技术》2002年第1期1-4,共4页Vacuum Electronics

摘　　要：讨论了由国内外 3个不同来源的六硼化镧 (LaB6)制成的阴极的发射性能 ,用标号 1# ,2 # ,3# 表示 ,其中 1# 是LaB6单晶阴极 ,2 # ,3# 分别是国外和国产的多晶阴极。实验主要测试了它们的发射特性 ,并作了简单分析 ,同时运用扫描电子显微镜、扫描俄歇微探针、X射线晶格衍射分析等手段对LaB6材料进行了分析 ,比较了LaB6材料质量与发射性能的关系。The emission property of the monocrystal and polycrystal LaB 6 cathodes was tested and compared in this paper. The LaB 6 materials obtained from the abroad and domestic, which are indicated as 1 #,2 #,3 #. The 1 # is monocrystal and the 2 #and 3 # are polycrystal LaB 6 cathodes. Analyzes with SEM, SAM and X ray diffraction were also performed to verify their components and parity as well as discuss the relationship with their emission ability. Some important conclusions and representative methods of the data processing of cathode electronics are reviewed .

关 键 词：六硼化镧阴极 单晶 多晶 发射性能 LaB6 阴极电子学 

分 类 号：O613.81[理学—无机化学] O462[理学—化学]