Multibeam electron gun with gated carbon nanotube cathode

Multibeam electron gun with gated carbon nanotube cathode

In this paper we present the method to produce the multibeam field-emission structure with cylindrical projections made from glassy carbon and coated with thin film of carbon nanotubes. The design of the 7-beam cathode-gate unit consisting of a flat field emission cathode with metal film gate on ins...

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Hauptverfasser: Bushuev, N., Grigoriev, Y., Bourtsev, A., Schalaev, P., Tarasov, E.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
beam compression
Carbon dioxide
carbon nanotube
Carbon nanotubes
Cathodes
CVD
Electron beams
electron gun
field emission cathode
gate
glassy carbon
Logic gates
Metals
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Zusammenfassung:In this paper we present the method to produce the multibeam field-emission structure with cylindrical projections made from glassy carbon and coated with thin film of carbon nanotubes. The design of the 7-beam cathode-gate unit consisting of a flat field emission cathode with metal film gate on insulating substrate and 19-beam field emission electron gun with beam compression is performed. It is shown experimentally on a model 7-beam gun that achieved the level of current density of 2,8 A/cm 2 , for 19-beam gun - 12 A/cm 2 on cathode.
DOI:10.1109/IVEC.2012.6262277