DocumentCode
1217932
Title
Correlation Between Emission Behavior and Surface Features of Scandate Cathodes
Author
Wang, Yiman ; Wang, Jinshu ; Liu, Wei ; Li, Lili ; Wang, Yanchun ; Zhang, Xizhu
Author_Institution
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing
Volume
56
Issue
5
fYear
2009
fDate
5/1/2009 12:00:00 AM
Firstpage
776
Lastpage
785
Abstract
Special emission behaviors have been observed historically and recently on scandate cathodes. For a better understanding of the phenomena, we investigated the correlation between emission properties of scandia-doped dispenser cathodes and their surface features. The influence of external electric fields on the semiconductor layer of the cathodes is suggested to be mainly responsible for the special emission characteristics.
Keywords
cathodes; vacuum apparatus; vacuum microelectronics; cathode semiconductor layer; emission behavior; scandate cathodes; scandia-doped dispenser cathodes; surface features; vacuum electron devices; Barium; Cathodes; Current density; Electron devices; Materials science and technology; Powders; Reservoirs; Temperature; Thermionic emission; Tungsten; Scandate cathode; semiconductor model; surface analysis; thermionic emission; vacuum electron device (VED); work function;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/TED.2009.2015619
Filename
4808162
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