Title :
Surface characteristics of scandate dispenser cathodes during life
Author :
Jinshu Wang ; Yiman Wang ; Xi Wang ; Xizhu Zhang ; Fan Yang ; Wei Liu ; Meiling Zhou
Author_Institution :
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
To find the changes of surface compositions during life time of the Scandia-doped impregnated dispenser cathodes, two cathodes have been tested at an activation temperature of 1150°CB-Mo and an operation temperature of 1000°CB-Mo , respectively, in an AES system up to more than 7,000 hours. Surface compositions were monitored in-situ at intervals. The tested results have been reported and discussed in this paper.
Keywords :
cathodes; scandium compounds; activation temperature; operation temperature; scandate dispenser cathodes; surface compositions; temperature 1000 degC; temperature 1150 degC; Barium; Cathodes; Chemicals; Educational institutions; Monitoring; Temperature; Temperature measurement; Auger electron spectroscopy; scandate cathodes; surface analysis;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
Conference_Location :
Paris
Print_ISBN :
978-1-4673-5976-4
DOI :
10.1109/IVEC.2013.6571168
