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在微波腔中电子束与微波场的相互作用,微波场影响电子的运动,同时电子束作为电流源也产生辐射影响微波场,是一个闭环系统.而辐射微波频率决定于两个因数:电子束的运动和微波器件的谐振频率.根据电子束同微波场之间的自洽互作用过程,给出了辐射微波频率同电子束的运动、微波器件的谐振频率之间的关系,通过2.5维PIC模拟研究了这种频率束流负载效应的特点,理论计算结果同数字模拟结果一致.
The interaction between the electron beam and the microwave field in the microwave cavity and the microwave field affect the movement of the electrons, and the electron beam also generates radiation affecting the microwave field as a current source and is a closed-loop system. The radiation microwave frequency is determined by two factors: electron beam And the resonant frequency of the microwave device.According to the self-consistent interaction between the electron beam and the microwave field, the relationship between the radiation microwave frequency and the movement of the electron beam and the resonant frequency of the microwave device is given. The characteristics of this frequency beam loading effect are simulated and the theoretical calculation results are consistent with the numerical simulation results.