Microscopic electron sources are of current interest due to their potential of initiating a high energy electron beam at high repetition rates and short pulse widths. This paper describes a possible new microscopic electron source, via model, based on the microchannel plate concept. The model predicts current densities on the order of 1 A/cm2. Further, with an appropriate bulk electron injection scheme, current densities of greater than 10 A/cm2 are predicted.
K. A. Boulais, K. A. Boulais,
"MCS: microchannel electron source", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 151432 (1 December 1990); doi: 10.1117/12.2301520; https://doi.org/10.1117/12.2301520