Relativistic generators with high average radiation power
Generators based on all mechanisms of stimulated emission of relativistic electron beams reached the gigawatt level of the peak radiation power in wavelength bands from decimeters to millimeters long ago. At the same time, sources used in such applications as accelerators with ultrafast particle acceleration, radars, etc. require that such generators should provide not only a peak power, but also a high average power of radiation, up to 105 W. This can be achieved by using accelerators, which operate at a high electron pulse repetition rate, and magnetic systems capable of ensuring sufficiently long magnetic pulses. In many cases, the simplest and most adequate way of achieving a high average power is the use of relativistic BWOs with explosive-emission injectors of high-current electron beams. Such generators have high adaptivity and short durations of transient processes, and their electrodynamic systems are well compatible with high-current electron beams. In the centimeter-wave band, they ensure production of spatially coherent radiation with a peak power of more than 1 GW in pulses with durations of up to 20—30 ns.