Open AccessGeneration in the regime with three resonance frequencies
Author(s) -
Yu. S. Oparina,
А. V. Savilov
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2103/1/012060
Subject(s) - physics , resonance (particle physics) , undulator , electron , wavelength , amplitude , radiative transfer , atomic physics , terahertz radiation , phase (matter) , radiation , phase velocity , range (aeronautics) , pulse (music) , optics , computational physics , nuclear physics , materials science , quantum mechanics , detector , composite material
If the group velocity of the wave is close to the bunch velocity, the bunch placed in the maximumum of the radiated pulse. It provides high effeciency of the electron-wave interaction. However, there are other factors related to particle dynamics, which have strong influence on the radiation process. In this paper the regime with three resonance frequencies is discussed. By varying the phase size of the electron bunch, the generation conditions at each of the frequencies can be changed. There are results for the spontaneous coherent super-radiative undulator emission in the terahertz frequency range from a short (as compared to the wavelength of the radiated wave) dense electron bunch. As a result, an electron bunch radiates two pulses with amplitudes of the radiated fields ∼ 10-70 MV/m.