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PACS numbers: 41.60.Cr; 35Q60, 35F20, 65M06 2022-12-12 Nonlinear Phenomena in Complex Systems, 2022, Vol. 25, № 4, P. 359–367 Keywords: simulation, nonlinear dynamics, multiple-beam instability, multiple-stream instability,
vacuum electronic device, volume free electron laser The article is devoted to overview of different types of vacuum electronic devices with two
or more charged particle beams. There are travelling wave and backward wave tubes, free
electron lasers and masers, volume free electron lasers. Two different cases take place in such
situation: multiple-beam instability in such devices and multiple-stream instability. In the
first case some charged particle beams moves in the system with different velocities. In the
second one there are beams with almost equal velocities (streams). Two systems of equations
for volume free electron laser with two electron beams are proposed. Some numerical results
of VFEL numerical simulation are given and discussed. Download:
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