DocumentCode :
2924457
Title :
DC emission characteristic of Sc- Doped Impregnated Dispenser cathodes
Author :
Wang, Xi ; Liu, XWei ; Wang, Yiman ; Cui, Yuntao ; Wang, Jinshu
Author_Institution :
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
fYear :
2012
fDate :
24-26 April 2012
Firstpage :
185
Lastpage :
186
Abstract :
Emission properties of Scandia Doped Impregnated (SDI) cathodes tested at DC model has been investigated in close-spaced diodes with water-cooled copper anodes. Space Charge Limited (SCL) current density of over 40 A/cm2 has been measured at 950°Cb after temperature compensation for electron cooling. The life test has lasted for more than 500 hours and is going on.
Keywords :
cathodes; cooling; current density; diodes; life testing; powders; scandium compounds; space charge; tungsten; DC emission characteristic; SCL current density; W:Sc2O3; close-spaced diode; electron cooling; impregnated dispenser cathode; life testing; powder; space charge limited current density; temperature compensation; water-cooled copper anode; Anodes; Cathodes; Current density; Density measurement; Heating; Temperature measurement; scandate cathode; thermionic emission; vacuum electron devices;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0368-2
Type :
conf
DOI :
10.1109/IVESC.2012.6264176
Filename :
6264176
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2924457
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