Operation of an ungated diamond field-emission array cathode in a L-band radiofrequency electron source

Operation of an ungated diamond field-emission array cathode in a L-band radiofrequency electron source

We report on the operation of a field-emitter-array cathode in a conventional L-band radio-frequency electron source. The cathode consisted of an array of ∼106 diamond tips on pyramids. Maximum current on the order of 15 mA was reached and the cathode did not show appreciable signs of fatigue after...

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Veröffentlicht in:Applied physics letters 2014-06, Vol.104 (26)
Hauptverfasser: Piot, P., Brau, C. A., Choi, B. K., Blomberg, B., Gabella, W. E., Ivanov, B., Jarvis, J., Mendenhall, M. H., Mihalcea, D., Panuganti, H., Prieto, P., Reid, J.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Arrays
Beams (radiation)
Cathodes
Diamonds
Emitters
Emitters (electron)
PARTICLE ACCELERATORS
Pyramids
Radio frequency
Tips
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Beschreibung
Zusammenfassung:We report on the operation of a field-emitter-array cathode in a conventional L-band radio-frequency electron source. The cathode consisted of an array of ∼106 diamond tips on pyramids. Maximum current on the order of 15 mA was reached and the cathode did not show appreciable signs of fatigue after weeks of operation. The measured Fowler-Nordheim characteristics, transverse beam density, and current stability are discussed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4884375