Simulation of Electron and Ion Bipolar Flow in High Current Diode with MagneticInsulation

摘要

Numerical simulation of formation of the collector ion flow in magneticallyinsulated ion diode (MID) with hollow cylindrical and cone-shaped cathode was studied. Such cathodes are often used for obtaining tubular high current electron microsecond beams. The ions, emitted by the collector and forming as a result of the ionization of the residual gas by electron beam, are focused into the cathode plasma region. This effect can negatively influence the diode operation.