Output characteristics of DRO with profiling focusing magnetostatic field

Methods for improving a diffraction radiation oscillator´s (DRO) output characteristics and for the creation of optimal conditions of electron beam/radiation field interaction are of scientific and practical interest. One example of such a study is the determination of the influence of the focusing magnetostatic field (FMF) in the interaction space of a thick electron beam (EB) with an open resonator electromagnetic field. The FMF profiling effect on the quality of microwave signal spectra is insufficiently studied. In this trend, are required additional investigations of the fine structure of the transformation mechanism of electron beam energy into electromagnetic oscillations in designed DROs, taking into account features of FMF change in the interaction space. The key problem, investigated in this paper, is the determination of the degree of influence of IMF inhomogeneity distribution between the pole pieces in the EB motion direction on oscillation excitement processes.