钪阴极离子轰击后的回收特性研究

IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839) Pub Date : 2004-09-06 DOI:10.1109/IVESC.2004.1414171

M. Zhang, Honglai Zhang, Pukun Liu, Yutao Li

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引用次数: 4

摘要

该阴极具有优异的电子发射性能。然而，由于其发射不均匀和对离子轰击的抵抗力较弱，限制了其在真空电子器件中的应用。采用了一种新的方法制备钪阴极。与传统浸渍钪阴极相比，该阴极具有离子轰击后发射均匀、回收快的特点。给出了离子轰击前后的XPS分析结果。

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Investigation of recovery characteristics after ion bombardment on scandate cathode

The scandate cathode has excellent electron emission capability. However, applications in vacuum electron devices are limited because of nonuniform emission and weak resistance to ion bombardment. A new method has been adopted for making scandate cathode. This type of scandate cathode showed more uniform emission and fast recovery characteristics after ion bombardment comparing with conventional impregnated scandate cathode. The results of XPS analysis before and after ion bombardment are presented.

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IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)

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