E-beam heating

Electron-Beam Heating

E-Beam heating

Thermionic Guns

also hot-cathode or hot-filament guns.
Most commonly used for evaporation.
Electrons are generated by hot filament of a high temperature alloy such as tungsten.

Schematic of self-accelarated hot-filament electron beam guns
(a)Linear-focus gun
(i)electrostatically focused
(ii)elctrostatically and magnetically focused

(b)Bent-beam electron gun with electromagnetic focusing and water-cooled evaporant support.

Plasma Guns