NDLI: Application of scandium-bearing cathode to microwave tube

Content Provider	IEEE Xplore Digital Library
Author	Lu Weiyuan Zhen Youlai Zhang Jingzhi
Copyright Year	2004
Description	Author affiliation: Nanjin Sank Group Co. Ltd., Nanjing, China (Lu Weiyuan; Zhen Youlai; Zhang Jingzhi)
Abstract	Scandium-bearing cathode has been paid universal attention to because it's lower operating temperature and high emission current density. But the application is also limited greatly as these shortcomings - nonuniform emission on cathode surface, ion bombarding - sensitive and renewing difficultly after poisoning. The involved cathode in this thesis improves these shortcomings by modifying joining method of scandium oxide. After activation of the cathode, its emission surface forms the layer to consist of scandium oxide and barium oxide with thickness of a monolayer or several monolayers and shapes the emission surface with lower work function by means of scandium oxide and barium oxide. This thesis introduced main performance of the cathode analytic condition of Auger electron spectrometry and x-ray photoelectron spectroscopy as well as application situation to grid control TWT.
File Size	30892
File Format	PDF
ISBN	0780384377
DOI	10.1109/IVESC.2004.1414257
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Barium Temperature Shape Performance analysis Current density Cathodes Electrons
Content Type	Text
Resource Type	Article

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