FIELD: electronic engineering. SUBSTANCE: cathode has porous pellet impregnated with electronic-emission material and placed in cup-shaped container, metal component welded to container base, and filament placed between container and metal component. Such design provides for limiting thermoelectronic emission from base and pellet sides. EFFECT: improved service life of cathode. 16 cl, 5 dwg
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Authors
Dates
1999-12-20—Published
1995-12-27—Filed