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- Title
An electron source with a multiarc plasma emitter for obtaining submillisecond pulsed megawatt beams.
- Authors
Vorob'ev, M.; Gamermaister, S.; Devyatkov, V.; Koval', N.; Sulakshin, S.; Shchanin, P.
- Abstract
An electron source with a plasma emitter based on an arc-discharge system with six cathodes and a common cylindrical hollow anode is described. Upon synchronous initiation of vacuum-arc discharges, the space of the hollow anode is filled by dense low-temperature plasma, the emission boundary of which is stabilized by a fine-structure metal grid with a 150-cm area. The arc-current amplitude for each cathode amounts to 100-300 A. Under the action of a constant accelerating voltage applied between the plasma emitter and grounded accelerating electrode combined with the drift tube, electrons are extracted from plasma and accelerated. At a working pressure of 0.04 Pa, an electron beam with a maximum current amplitude of 1 kA has been obtained at an initial accelerating voltage of 80 kV and pulse duration (FWHM) of 100 μs, which has been transported in a longitudinal magnetic field of 0.035 T over a distance of 80 cm.
- Subjects
ELECTRON sources; PLASMA-beam interactions; ELECTRIC arc; PLASMA flow; LOW temperature plasmas
- Publication
Technical Physics Letters, 2014, Vol 40, Issue 6, p506
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785014060261