Title :
Excitation of broadband oscillations by electron beam in coaxial disk loaded transmission line
Author :
Kornilov, E.A. ; Makov, P.I. ; Onishchenko, I.N. ; Sotnikov, G.V.
Author_Institution :
Inst. of Plasma Electron., Kharkov Inst. of Phys., Ukraine
Abstract :
The excitation by an electron beam of UHF oscillations in coaxial slowing down transmission line with comb on internal and external cylinders is considered. The analytical and numerical analysis of the received dispersion equation is carried out. The dependence of the gain on energy of an electron beam is investigated. It is shown, that the dependence of the gain on frequency has a maximum nearby Cherenkov resonance of a beam with an eigenwave of structure, outside of a resonance the gain falls down under the linear law at reduction of frequency. The nonlinear theory of the UHF amplifier is constructed on the basis of the chosen slowing down structure. The maximal amplitude of a longitudinal electrical field, efficiency of interaction, optimum length of structure are determined
Keywords :
UHF oscillators; electron beam effects; microwave oscillators; slow wave structures; transmission line theory; Cherenkov resonance; UHF amplifier; UHF oscillations excitation; broadband oscillations; coaxial disk loaded transmission line; coaxial slowing down transmission line; comb; dispersion equation; eigenwave; electron beam; gain; longitudinal electrical field; nonlinear theory; slowing down structure; Coaxial components; Electron beams; Equations; Frequency; Optical coupling; Plasma accelerators; Resonance; Structural beams; Transmission line theory; Transmission lines;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.816992
