Within the emitter assembly, a large electrical current is passed through a spiral tungsten filament. The white-hot filament then "boils off" electrons that are pulled forward by a metal plate biased 10,000 Volts more positively, forming an electron beam.
The beam starts toward you, but the magnetic field bends it into an arc that loops back to strike the silicon charge. The electrons drop by 10,000 Volts and, with a current of up to 1.5 Amps, they can deposit up to 15 KW of energy directly into the center of the silicon charge.
