FIELD: electronic engineering.
SUBSTANCE: gas-discharge electron gun uses an ion-plasma accelerator formed by an additional annular discharge chamber built between the poles of the electromagnet, which has an annular slot located between the main chamber of the electron gun and the additional one. The ions created in the additional discharge chamber are injected through the annular slot between the poles of the electromagnet and maintain a non-self-sustained high-voltage glow discharge, in which an axially symmetric electron beam is formed. When the power source of the ion-plasma accelerator is turned off, the electron beam current stops.
EFFECT: increased speed of control and gas and energy efficiency of the gun.
4 cl, 1 dwg
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