Title :
Investigation of recovery characteristics after ion bombardment on scandate cathode
Author :
Zhang, Mingchen ; Zhang, Honglai ; Liu, Pukun ; Li, Yutao
Author_Institution :
Inst. of Electron., Chinese Acad. of Sci., Beijing, China
Abstract :
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.
Keywords :
X-ray photoelectron spectra; cathodes; electron emission; vacuum microelectronics; X-ray analysis; XPS analysis; electron emission capability; impregnated cathode; ion bombardment; nonuniform emission; recovery characteristics; scandate cathode; vacuum electron devices; weak resistance; Anodes; Barium; Cathodes; Current density; Current measurement; Density measurement; Electron devices; Electron emission; Immune system; Surface resistance;
Conference_Titel :
Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International
Print_ISBN :
0-7803-8437-7
DOI :
10.1109/IVESC.2004.1414171
