带状注扩展互作用振荡器的研究

Research of Sheet Beam Extended Interaction Oscillator

设计了一种带状线性电子注与电磁波进行互作用的低电压高效率的扩展互作用结构。这一结构主要由9个耦合间隙,2个耦合谐振腔组成,具有高的特性阻抗R/Q。整个谐振腔如一个矩形波导两端封闭实现电磁场谐振。为了最后的成品器件能和其他的设备连接测量需要将输出窗变换到标准波导。利用3D-PIC粒子模拟程序进行数值模拟,得到一种工作在86.1GHz,输出峰值功率为0.46kW,效率为8%的扩展互作用振荡器,电子注电流的发射密度为125A/cm2。

This paper designed an extended interaction structure with low voltage and high efficiency which used a linear sheet beam to interact with electromagnetic wave.This structure consisted with nine gaps and two coupled cavities with high characteristic impedance R/Q.The structure realized electromagnetic resonance by closing its both ends like a rectangular waveguide..3D-PIC simulation program is used to complete the numerical simulation.The results showed that the peak output power is 0.46 kW under 86.1 GHz with 8% efficiency.The electron beam emission density is 125 A/cm2.