Comparison of velvet- and cesium iodide-coated carbon fiber cathodes

Comparison of velvet- and cesium iodide-coated carbon fiber cathodes

Presents results of an experimental comparison of a velvet cathode- and a carbon fiber cathode-coated with cesium iodide (CsI) salt. Each cathode had a planar geometry, with similar emission areas. The cathodes were tested at electric field strengths of 50 kV/cm at anode-cathode (A-K) gaps of 4.0 cm...

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Veröffentlicht in:IEEE transactions on plasma science 2001-06, Vol.29 (3), p.445-451
Hauptverfasser: Shiffler, D., LaCour, M., Golby, K., Sena, M., Mithcell, M., Haworth, M., Hendricks, K., Spencer, T.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Carbon dioxide
Carbon fibers
Cathodes
Cesium iodides
Comparative analysis
Diodes
Electric potential
Electricity
Electron beams
Electron tubes
Electronic tubes, masers
Electronics
Evolution
Exact sciences and technology
Explosives
Geometry
Microwave tubes (eg, klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.)
Microwaves
Reproducibility
Reproducibility of results
Surface impedance
Voltage
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Beschreibung
Zusammenfassung:Presents results of an experimental comparison of a velvet cathode- and a carbon fiber cathode-coated with cesium iodide (CsI) salt. Each cathode had a planar geometry, with similar emission areas. The cathodes were tested at electric field strengths of 50 kV/cm at anode-cathode (A-K) gaps of 4.0 cm. The applied voltage had a 1-/spl mu/s duration and the pulser was operated at up to a 1-Hz repetition rate. The system had a low base pressure (
ISSN:0093-3813
1939-9375
DOI:10.1109/27.928942