NDLI: High-current low-energy plasma electron sources

Content Provider	IEEE Xplore Digital Library
Author	Schanin, P.A. Koval, N.N. Devyatkov, V.N.
Copyright Year	2001
Abstract	Summary form given only, as follows. The electron source with plasma cathode based on a low-pressure arc and glow discharge with hollow anode is considered in report. The plasma cathode allows to produce the gas-filled diode that provided more high perveance of diode and beam current then a vacuum diode. In gas-filled diode the electrons extracted from cathode into accelerating gap through a metallic mesh, that stabilizes emission boundary of the cathode plasma, ionize the gas producing anode plasma. The electrons are accelerated in layer which formed between the emission mesh electrode of plasma cathode and plasma anode. The formed beam by diode propagating through a drift tube, that is simultaneously anode of diode, is neutralized by ions plasma and is pinched by self magnetic-field so the current density to the tube end exceeds a few times that at the cathode. The beam current up to 1000 A and current density up to 100 A/cm/sup 2/ were obtained at accelerating voltage of 20 kV and pulse duration of 30 μs. The self pinched electron beam propagates about 80% of current at distance 50 cm without break off or instabilities if the gas pressure exceeds 1·10/sup -2/ Pa.
Sponsorship	Plasma Sci. & Applications Committee
File Size	39754
File Format	PDF
ISBN	0780371410
DOI	10.1109/PPPS.2001.960746
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-06-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma sources Electron sources Plasma accelerators Cathodes Diodes Anodes Plasma density Particle beams Acceleration Electron emission
Content Type	Text
Resource Type	Article

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