Advanced cathode research

Advanced cathode research

Long life, high current density cathodes are required of several THz RF sources. Conventional porous tungsten cathodes are limited to current densities less than 10 A/cm 2 for reasonable lifetimes. This presentation describes research to develop long life cathodes with emission current densities app...

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Bibliographische Detailangaben
Hauptverfasser: Ives, R.L., Falce, L., Miram, G., Collins, G., Curtis, M., Gunther, K., Schwartzkopf, S.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Barium
Cathodes
Current density
Radio frequency
Reservoirs
Surface treatment
Wire
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Beschreibung
Zusammenfassung:Long life, high current density cathodes are required of several THz RF sources. Conventional porous tungsten cathodes are limited to current densities less than 10 A/cm 2 for reasonable lifetimes. This presentation describes research to develop long life cathodes with emission current densities approaching or exceeding 100 A/cm 2 .
ISSN:2162-2027
DOI:10.1109/ICIMW.2008.4665465