FIELD: electronic engineering. SUBSTANCE: device has pivot 1 mounting secondary electron emitters 2 with autoelectron emitters 3 placed inbetween and protected by means of insulating film 4 made of dielectric materials, such as borides, nitrides, oxides doped with alkali or alkali-earth materials. Pivot 1 is placed in cylindrical anode 5 in a spaced relation. EFFECT: reduced warm-up period. 5 cl, 5 dwg
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Authors
Dates
1995-07-25—Published
1991-04-11—Filed