DocumentCode
2924485
Title
Investigation of influence of surface activator element on scandate cathodes work function
Author
Zhang, Xizhu ; Wang, Jinshu ; Wang, Yiman ; Liu, Wei ; Zhou, Meiling
Author_Institution
Coll. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
fYear
2012
fDate
24-26 April 2012
Firstpage
187
Lastpage
188
Abstract
The surface analysis of scandate cathodes has revealed that active substances of Ba, Sc and O formed a layer on the surface of the cathodes. By using First-principles calculation method, the W and Ba-Sc-O-W systems were calculated to study the effect of active elements on the work function of the cathode.
Keywords
barium; cathodes; oxygen; scandium; tungsten; work function; Ba-Sc-O-W; first-principle calculation method; scandate cathode work function; surface activator element; surface analysis; Barium; Cathodes; Crystals; Educational institutions; Energy states; Thermionic emission; Materials Studio; Scandate cathodes; work function;
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.2012.6264177
Filename
6264177
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