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This article is cited in 18 scientific papers (total in 18 papers)
Physical electronics
Physical operating principles of scandate cathodes for microwave devices
V. I. Kapustina, I. P. Lia, A. V. Shumanova, Yu. Yu. Lebedinskiib, A. V. Zablotskiib a JSC Pluton, Moscow
b Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
Abstract:
The electronic structure of barium oxide crystallites determining the emission properties of both dispenser and scandate cathodes has been studied using electron spectroscopy for chemical analysis, electron energy loss spectroscopy, and optical spectroscopy. It has been established that the other elements (calcium, aluminum, scandium, and tungsten) contained in cathode materials are diluted in barium oxide and significantly affect its electronic structure and, consequently, emission properties. The obtained results give an idea about the physical and physicochemical mechanisms of the effect of scandium on the reduction of the work function of scandate cathodes relative to that of the cathodes of other types.
Received: 10.05.2016
Citation:
V. I. Kapustin, I. P. Li, A. V. Shumanov, Yu. Yu. Lebedinskii, A. V. Zablotskii, “Physical operating principles of scandate cathodes for microwave devices”, Zhurnal Tekhnicheskoi Fiziki, 87:1 (2017), 106–116; Tech. Phys., 62:1 (2017), 116–126
Linking options:
https://www.mathnet.ru/eng/jtf6347 https://www.mathnet.ru/eng/jtf/v87/i1/p106
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