Patent ID: 8803435
Filing Date: 2014-08-12
Classification: H01J

Abstract:
1. An apparatus comprising: a cathode; an anode, wherein the anode and cathode are receptive to a first power source to produce an anode electric potential higher than a cathode electric potential; a gate positioned between the anode and the cathode, the gate being receptive to a second power source to produce a gate electric potential selected to induce emission of a first set of electrons from the cathode; a suppressor positioned between the gate and the anode, the suppressor being receptive to a third power source to produce a suppressor electric potential selected to provide a force on an electron in a direction pointing towards the suppressor in a region between the suppressor and the anode; and at least one path traversable for a first portion of the first set of electrons, extending from the cathode, through the gate, through the suppressor, and to the anode.