Applied Physics Letters · 1987 · 16 citations · 4 references
Natural SciencesElectrical EngineeringPhysicsElectromagnetismPlasma PhysicsRadiation PhysicsAccelerator PhysicsElectron Beam PhysicsPlasma SourcesCurrent DensityElectron AcceleratorsElectron Beam AccelerationElectron Beam GenerationElectron Beam SourcesElectron SourcesHollow Cathode DischargesHollow Cathodes
An electron beam with current density greater than 30 A/cm2 and total current of 92 A has been generated in 5 μs pulses by accelerating the electrons from a glow discharge in a narrow gap between two grids. The ratio of the extracted electron beam current to discharge current is approximately 1. The gun also operates in a dc mode.
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Grid-controlled plasma cathodes
S. Humphries, S.K. Coffey, M. E. Savage et al. · Journal of Applied Physics · 1985 · 24 citations
High current density plasma cathode
S. Humphries, M. E. Savage, D. M. Woodall · Applied Physics Letters · 1985 · 17 citations