波导系统中电子注辐射过程的能量守恒关系
THE ENERGY CONSERVATION IN THE PROCESS OF ELECTRON BEAM RADIATION IN A WAVEGUIDE SYSTEM
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摘要: 本文应用电磁场的算子理论求出了在任意截面的波导系统内,由电子注电流所激励的电磁场的公式。在这一公式中由单位功率流下的场代替了一般并矢格林函数中的归一化本征常数;这样,不但可以证明激励过程中的能量守恒关系,还可以比较方便地应用到各种实际的电子器件的互作用理论中去。
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Abstract: The equation of electric field radiated by the current f electron beam in a waveguide with arbitrary cross-section is derived. In this equation, the ordinany dyadic Green s function is replaced by the modified one in which the eigenfield is normalized by the power flow. By this equation, the energy conservation in the radiation process can be proved. This equation can be used to compute the interaction of the actual electron devices. -
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