Electron tube with reduced secondary emission

Details Electron tube with reduced secondary emission Electron tube with reduced secondary emission

H - Electricity

01

J

313/170

H01J 23/02 (2006.01) H01J 1/36 (2006.01) H01J 1/46 (2006.01) H01J 29/02 (2006.01)

Patent

CA 1136691

PATENT APPLICATION . of LOUIS R. FALCE for ELECTRON TUBE WITH REDUCED SECONDARY EMISSION Abstract Secondary electrons emitted from an electron-collecting electrode of a vacuum tube degrade the performance. Emission of high-speed secondaries is reduced by coating the electron- collecting surface with a material of low atomic number. Emission of low-speed secondaries is a less predictable func- tion of the surface material and structure. The invention comprises a coating of aluminum boride or similar substance, which has low secondary emission and is also easy to outgas.

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