Physical operating principles of scandate cathodes for microwave devices
- 作者: Kapustin V.1, Li I.1, Shumanov A.1, Lebedinskii Y.2, Zablotskii A.2
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隶属关系:
- OAO Pluton
- Moscow Institute of Physics and Technology (State University)
- 期: 卷 62, 编号 1 (2017)
- 页面: 116-126
- 栏目: Physical Electronics
- URL: https://journals.rcsi.science/1063-7842/article/view/198801
- DOI: https://doi.org/10.1134/S1063784217010108
- ID: 198801
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详细
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.
作者简介
V. Kapustin
OAO Pluton
编辑信件的主要联系方式.
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
I. Li
OAO Pluton
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
A. Shumanov
OAO Pluton
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow, 105120
Yu. Lebedinskii
Moscow Institute of Physics and Technology (State University)
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow oblast, Dolgoprudnyi, 141700
A. Zablotskii
Moscow Institute of Physics and Technology (State University)
Email: kapustin@mirea.ru
俄罗斯联邦, Moscow oblast, Dolgoprudnyi, 141700