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Computer simulation of knife-edge field emission cathode performance

One of the potential advantages of vacuum field emission arrays (FEA) is that the FEA can produce high frequency modulated electron beams at high current densities. A knife-edge field emission array (KEFEA) structure has been built. The KEFEA cathode array consists of many knife field emitters, each...

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Main Authors:	Zeng, B.Q., Yang, Z.H., Xie, K.J., Yang, C.F.
Format:	Conference Proceeding
Language:	English
Subjects:	Anodes Capacitance Cathodes Current density Electron beams Elementary particle vacuum Field emitter arrays Optical modulation Testing Vacuum technology
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creator	Zeng, B.Q. Yang, Z.H. Xie, K.J. Yang, C.F.
description	One of the potential advantages of vacuum field emission arrays (FEA) is that the FEA can produce high frequency modulated electron beams at high current densities. A knife-edge field emission array (KEFEA) structure has been built. The KEFEA cathode array consists of many knife field emitters, each with its own self-aligned surrounding gate. The initial tests of the KEFEA cathodes have shown a threshold bias voltage of less than 50 V. In this paper, the KEFEA emission performance has been studied by simulating a unit cell structure using the particle-in-cell simulation code MAGIC.
doi_str_mv	10.1109/ICIMW.2000.892943
format	conference_proceeding
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source	IEEE Electronic Library (IEL) Conference Proceedings
subjects	Anodes Capacitance Cathodes Current density Electron beams Elementary particle vacuum Field emitter arrays Optical modulation Testing Vacuum technology
title	Computer simulation of knife-edge field emission cathode performance
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