| 1. | The structure of field emission triode is first simulated by magic . the tip height , tip position , tip curvature , gate aperture , and gate voltage are changed , to observe the emission current and the electron congregation 本课题首先采用magic软件对三极管结构的尖锥场发射阴极进行了模拟计算,分别改变尖锥高度,锥尖位置,尖锥曲率半径,栅极孔径及栅极电压,观察阳极收集电流及电子束的会聚情况。 |