The effect of a space charge of electrons multiply backscattered from the anode on the current in a planar diode

The effect of a space charge of electrons multiply backscattered from the anode on the current in a planar diode was theoretically studied. Spectral distributions of the energy of electrons moving along the electric field were calculated by the Monte Carlo code. It was found that the maximum decrease in the current of diodes with high-Z anodes does not exceed 20%.