FIELD: physics.
SUBSTANCE: auto-emission microwave diode contains a vacuum-tight case of cermets, an electron source, an anode with a screw end, a stem and electrical contacts. Instead of the entrance window, a metal plug is provided that is vacuum-tightly connected to the case, the auto cathode is a Si-nanoSi-C-MoC substrate or a Si-nanoSi-C-graphene substrate based on a heterostructure and placed on the inner side of the plug, the electron-withdrawing electrode is made of a metal-carbon or graphene film and positioned between the autocathode and the anode.
EFFECT: increasing the auto emission homogeneity for large-area auto-cathodes.
1 dwg
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