Cathode emissive body for an impregnated cathode of an electron tube
AssigneeThomson Licensing
InventorsJean-Claude Pruvost, Jeremy Langot, Jean-Remy Adamski
Life of this patent
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Abstract
Body (1) formed from a porous matrix impregnated with an electron-emitting material, defined by external faces (11, 12, 13) that all have a roughness of less than 0.2 μm. Because of this surface finish, the operation and the lifetime of the cathodes provided with such cathode emissive bodies are substantially improved.
Claims14
A cathode emissive body for an impregnated cathode of an electron tube, formed from a porous matrix impregnated with an electron-emitting material, defined by external faces comprising an emissive surface, wherein said external faces including a lateral surface have a roughness of less than 0.2 μm.
Dependencies are inferred from the claim text.