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Novel schemes of powerful multichannel planar FEMs was developed based on two parallel sheet beams 0.8 MeV / 1 kA forming by the accelerator ELMI. In 75 GHz frequency band two-channel planar FEM operating with two-dimensional distributed feedback was elaborated. For record transverse size of interaction space (up to 45 × 2.5 wavelengths) synchronization of emission from both electron beams and realization...
Employment of periodical Bragg structures can be considered as an effective way of controlling the electromagnetic energy fluxes and provision of spatial coherence of radiation in electron and optical devices with oversized interaction space. In the paper new modifications of Bragg structures are discussed that can be beneficial for drastic increasing of radiation power of mm and submm FELs and infrared...
In this paper we present a special type of microwave oven designed for effective heating of dielectric materials with low microwave energy absorption. This device especially developed for Research-Education Centre “Nanosystems and Advance Materials” of Novosibirsk State University opens up possibilities to utilize advantages of microwave heating in various scientific investigations and technologies...
The novel scheme of separation of the mm-wave radiation from the intense electron beam using planar Bragg wave transformer, is suggested and realized. In the experiments at the planar FEM with the new scheme of separation, the generation of powerful 4-mm radiation pulses was observed. The duration of these pulses is increased in two times in comparison with the old scheme of the beam dump and has...
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