Electron beam extraction from a broad-beam vacuum-arc metal plasmasource |
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| Authors: | Oks EM Brown IG |
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| Institution: | Inst. of High-Current Electron., Acad. of Sci., Tomsk; |
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| Abstract: | We describe experiments demonstrating the formation of a high current electron beam from a vacuum arc plasma. A preexisting vacuum arc ion source was used, with the extraction voltage reversed in polarity so as to form an electron beam rather than an ion beam; no other changes were required. The beam formed was of energy up to 33 keV, beam current up to 70 A, beam diameter about 10 cm, pulse width 500 μs, and energy density up to 25 J/cm2. This kind of source can be used for material surface modification |
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