High current density hollow cathode electron beam source

Rocca, J. J.; Szapiro, B.; Verhey, T.
May 1987
Applied Physics Letters;5/11/1987, Vol. 50 Issue 19, p1334
Academic Journal
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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