533.922We study the interaction of a rectilinear nonrelativistic electron beam with a solid-state plasma in a rectangular metal waveguide, as well as wave processes in a plasma waveguide of rectangular cross section in the absence of an electron beam. It is shown that in such a system, space-charge waves of an electron beam, which propagate along a semiconductor boundary, become unstable in a wide frequency band. *
The potential for developing new terahertz sources based on the interaction between a nonrelativistic electron beam and a semiconductor plasma is examined. The article presents a theoretical study of the beam-plasma interaction in a magnetized rectangular waveguide. Such an interaction gives rise to broad-band instabilities of the space-charge waves of the electron beam. The effects of the external magnetic field and the electron collision frequency on the growth rates of the unstable waves are studied and discussed.
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