Evaporation and lifetime of the Ammonium Perrhenate Impregnated W Matrix Ba-W Cathode

被引：0
|
作者：
Wang, Xiaoxia [1 ]
Hu, Mingwei [1 ]
Qi, Shikai [1 ]
Luo, Jirun [1 ]
Zhao, Qinglan [1 ]
机构：
[1] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China
来源：
2016 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) | 2016年
关键词：
Impregnated barium tungsten Cathode; Ammonium perrhenate (NH4ReO4); Evaporation rate; long Lifetime;
D O I：
暂无
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：
In this paper we mainly describes the research progress in a kind of ammonium perrhenate impregnated W matrix Ba-W cathode, which includes the evaporation rate measuring and the lifetime testing of the cathode. The evaporation rate measuring results shows that the evaporation rate of the cathode is 8.66 x 10(-10)g.cm(-2) s(-1) at 1000 degrees Cbr measured by a quartz crystal oscillating method. The lifetime testing results show that the emission current, after 22392h lifetime at a temperature of 1000 degrees Cbr, has still increased more than 6% of the initial 3.0 A/cm(2) DC current density.
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页数：2
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