DocumentCode
1523124
Title
Cathode performance in background of residual gases
Author
Kobale, Manfred ; Reiners, Michael
Author_Institution
Siemens AG, Munich, West Germany
Volume
37
Issue
12
fYear
1990
fDate
12/1/1990 12:00:00 AM
Firstpage
2581
Lastpage
2584
Abstract
It is shown to what extent residual gases appearing in microwave tubes affect the characteristics of the cathode, before and during operations. Tests were carried out on cathodes of the metal capillary type. The reaction takes place on the emitting surface of the cathodes, so the information retrieved can be applied to other types of cathode. Tungsten and osmium-coated tungsten cathodes were tested. The gases investigated were the following: helium, argon, nitrogen, carbon monoxide, carbon dioxide, oxygen, and methane
Keywords
cathodes; electron tube testing; microwave tubes; surface chemistry; Ar; CO; CO2; He; N2; O2; Os; Os-W; W; cathodes; emitting surface; metal capillary type; methane; microwave tubes; residual gases; surface chemical reactions; Anodes; Carbon dioxide; Cathodes; Gases; Helium; Modems; Testing; Tungsten; Valves; Voltage;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/16.64536
Filename
64536
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