ELECTRON BEAM GENERATOR Russian patent published in 2001 - IPC

FIELD: physical electronics. SUBSTANCE: invention can be used in pumping systems of gas lasers and for initiation of plasma-chemical reactions in medium pressure gases ( 10.0-100.0 T ). Electron beam generator has discharge structure made of cathode and anode elements placed in working gas. Cathode element comes in the form of cooled metal plate on whose surface facing anode dielectric coat with through hole is deposited. Anode is manufactured in the form of plate positioned close to dielectric coat of plate with hole and is located above hole in dielectric coat. Thickness of coat h and diameter d of hole are chosen from relation h ≥U/E_bd, where U is operational voltage of generator; E_bd is breakdown voltage of electric field for coat; dd ≅ P/ΔTλ, where P is contributed power; ΔT is permissible value of overheating of dielectric coat; λ is thermal conductivity factor of material of cathode plate. Beam of accelerated electrons is formed in region of cathode drop of potential and anomalous glow discharge emerging with supply of operational voltage to discharge structure of generator. EFFECT: development of electron beam generator with energy in range of kiloelectronvolts with increased mean pressure directly in medium-pressure gas. 1 dwg, 1 tbl