A set of coupled nonlinear self-consitent differential equations of the FEM amplifier, including the effects of electron momentum spread, adiabatic injection of electron beam, space charge and wiggler taper, is derived in three dimensions.

• 在此基础上,利用三维非线性理论,导出了以椭圆波导、平板摇摆器为FEM放大器模型的三维非线性工作方程组,考虑了电子注发射度、空间电荷波效应、电子注在互作用区入口处的绝热压缩过程以及变参数摇摆器等因素。