DocumentCode
891227
Title
Comment on progress in scandate cathodes
Author
Hasker, Jan ; Crombeen, J.E. ; Van Dorst, Peter A M
Author_Institution
Philips Res. Labs., Eidhoven, Netherlands
Volume
36
Issue
1
fYear
1989
Firstpage
215
Lastpage
219
Abstract
Emission capability and emission recovery after ion bombardment are discussed. Impregnated top-layer scandate cathodes show better performance than cathodes with a mixed matrix of tungsten and scandia and impregnated cathodes with a sputtered layer consisting of tungsten and scandia. The recovery of scandate cathodes has been considerably improved, and it has been shown that fast emission recovery after ion bombardment is most probably feasible at a cathode operating temperature of 950 degrees C/sub b/.<>
Keywords
scandium compounds; thermionic cathodes; thermionic electron emission; 950 C; Sc/sub 2/O/sub 3/-W; cathode operating temperature; emission capability; emission recovery after ion bombardment; impregnated cathodes; progress; sputtered layer; Anodes; Cathodes; Current density; History; Schottky diodes; Temperature distribution; Transmission line matrix methods; Tungsten; Voltage;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/16.21208
Filename
21208
Link To Document