Numerical Simulation of Diodes with Plasma Electrodes 1

Abstract – A problem of generation of high bright-ness long pulse power electron beams in a strong magnetic field is of general interest. Especially it is important for thermonuclear applications. To raise plasma parameters in the multi mirror trap GOL-3 it was proposed earlier to inject into the plasma an additional electron beam of sub milli-second duration with high power. This was a rea-son why an elaboration of source for generation of the beam on the base of plasma emitter with inde-pendently generated plasma has begun. A CAD POISSON-2 was used for modeling of the source; therefore, new algorithms were included in it for calculation of plasma surface shape. A numerical simulation of diodes with high density of emission current is made. Results of modeling are compared with those obtained by the code PBGUNS and with results of experiments carried out in BINP. Calcu-lated characteristics for kiloampere range beam suitable for thermonuclear applications are ob-tained for designed source. 1