Yuanlong Mo

TL;DR: In this article, the dispersion equation and interaction impedance expression of disk-loaded waveguide is obtained with accurate field theory for the first time, and the theoretical calculated results are compared with the simulated results from the HFSS (High Frequency Structure Simulator) code using finite element method.

TL;DR: In this paper, a full three-dimensional (3D) model has been developed that can be used to investigate the beam-wave interaction in a high-power, Ka-band relativistic coupled-cavity traveling-wave tube (TWT).

Abstract: The plasma filled dielectric Cerenkov maser considering the effect of the plasma grating has been studied. The plasma grating is formed by the modulation of the strong fields. According to the plasma-grating model, An equivalent model is constructed. The modified dispersion relation has been derived .The numerical results show that when the modulation over the background plasma increases, the operation frequency also increases, however, the growth rate varies slightly. Compared with the calculation results obtained by treating the plasma as uniform fluids, the calculation results with the equivalent model describe the bounded bandwidth of the dielectric oscillator more precisely.

TL;DR: In this paper, the dispersion characteristics and the interaction impedance of a disk-loaded waveguide filled with plasma were analyzed in a strong longitudinal magnetic field, and the frequency of the TM01 mode increases as the density of the plasma increases.

TL;DR: In this article, a double staggered ladder circuit with average cavity field method and three-dimensional finite element method is analyzed, and the influence of the electron beam channel on the dispersion characteristics is discussed.