Simulation of Electron Beam Dynamics in a Nonmagnetized High-Current Vacuum Diode

Abstract

The electron beam dynamics in a nonmagnetized high-current vacuum diode is analyzed for different cathodeanode gap geometries. The conditions enabling to achieve the minimal initial momentum spread in the electron beam are found out. A drastic rise of current density in a vacuum diode with a ring-type cathode is described. The effect is shown to be caused by electrostatic repulsion.