DocumentCode
2925270
Title
17.6: Evaporation behavior of scandia doped dispenser cathode
Author
Wang, Jinshu ; Li, Lili ; Zhao, Lei ; Wang, Yiman ; Liu, Wei ; Zhang, Xizhu
Author_Institution
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
fYear
2010
fDate
18-20 May 2010
Firstpage
427
Lastpage
428
Abstract
The evaporated substance of Scandia doped impregnated dispenser cathode is mainly composed of Ba and BaO and Ba evaporated more easily than BaO from the surface of the scandate cathode, which is consistent with the result of impregnated Ba-W cathode. However, the evaporation rate of total substance and the evaporated amount of Ba and BaO from the scandate dispenser cathode are lower than those from impregnated Ba-W and M -type cathodes.
Keywords
cathodes; Ba; BaO; Scandia doped dispenser cathode; Scandia doped impregnated dispenser cathode; evaporation behavior; scandate cathode; Cathodes; Current density; Detectors; Instruments; Materials science and technology; Oscillators; Powders; Temperature dependence; Temperature measurement; Tungsten; Scandia doped tungsten matrix; dispenser cathode; evaporation behavior; temperature dependent;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electronics Conference (IVEC), 2010 IEEE International
Conference_Location
Monterey, CA
Print_ISBN
978-1-4244-7098-3
Type
conf
DOI
10.1109/IVELEC.2010.5503440
Filename
5503440
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