Oscillations of an electron stream with a virtual cathode

The results of an investigation of the oscillations of a virtual cathode and the hysteresis of the state for a one-dimensional electron stream in a flat drift space are given. It is shown that in the case of a given mean space charge density and a given injection current different oscillatory regimes can exist in a stream with a virtual cathode.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 74–77, October, 1987.In conclusion, the authors thank L. V. Shelomentsev for carrying out the numerical calculations for the nonrelativistic stream on the computer.