Abstract
It was found out that the inclusion of a reactive load in the external circuit of a plasma diode with an electron beam can greatly change the modes of its operation. We demonstrated that the presence of an inductance in the external circuit of the Pierce diode leads to appearance of a new dispersion branch. The growth rates and frequencies for this branch are calculated. The frequencies corresponding to unstable states of this branch exceed the plasma frequency. The threshold of instability is shown to shift to smaller inter-electrode distance values with decreasing in the inductance magnitude and can be lower than the threshold of the Pierce diode with a short circuit.
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