the start up and linear growth process of the microwave within the foldaway-concentric cylindrical resonant cavity are analyzed based on the one dimensional model firstly, then a 2.5-d pic code is employed to study the nonlinear interaction 由于電子束在同一個腔內(nèi)受到了100深度的調(diào)制,可以直接加微波提取腔進(jìn)行微波提取。然后用二維半pic程序?qū)λM(jìn)行數(shù)值模擬研究。