Microstructure and mechanism of emission of W-Ba dispenser cathodes

被引：0
|
作者：
Getman, OI [1 ]
Lushkin, AE [1 ]
Panichkina, VV [1 ]
Rakitin, SP [1 ]
机构：
[1] NASU, Inst Prob Mat Sci, UA-03142 Kiev, Ukraine
来源：
IVESC2004: THE 5TH INTERNATIONAL VACUUM ELECTRON SOURCES CONFERENCE PROCEEDINGS | 2004年
关键词：
D O I：
10.1109/IVESC.2004.1414190
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The influence of tungsten powder dispersity and tungsten skeleton microstructure on the formation of emission power of dispenser cathodes (DC) under heat vacuum treatment, namely under degassing and activating was investigated. Emissive and Auger spectrometry investigations were carried and the DC microstructure characteristics were obtained. It is presumed that DC emission power is connected with the presence of three-dimensional BaO-CaO formations, monatomic (BaO and Ba) films and excess oxygen on the tungsten phase surface.
引用
收藏
页码：191 / 193
页数：3
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