Simulation of formation of an intensive electron beam in bipolar electron-optical system with the plasma anode

摘要

The algorithm of numerical simulation of electrons sources in base of the high-voltage glow discharge with the anode plasma, taking into account change of the form and the location of a surface of anode plasma, that renders essential influence on formation of an ion stream, which at hit on the cold cathode as a result of secondary ion - electronic emission forms an electron beam, is offered. As against other algorithms the offered physics-mathematical model takes into account influence on distribution of potential not only an ion space charge, but also a space charge of beam electrons, distribution of potential in turn defines as a trajectory the beam electrons and a stream of ions, and position of plasma edge which movement is considered during formation of a beam according to Stefan's condition.