Fig. 1. The configuration of the simulated model:　(a) The cutaway drawing of the single-hole PHC and the tri-plated transmission line (units: mm); (b) the vertical drawing of the single-hole PHC and the tri-plated transmission line (units: mm).仿真模型的结构示意图　(a) 单孔PHC及三板传输线剖面图(单位: mm); (b) 单孔PHC及三板传输线俯视图(单位: mm)

Fig. 2. The forward voltage waveform used in simulation.仿真计算时馈入的理想电压信号

Fig. 3. The upstream and the downstream currents of the single-hole PHC while the cathode emitted only electrons阴极发射电子时, 单孔PHC的上/下游电流

Fig. 4. The upstream and the downstream currents of the single-hole PHC while the cathode emitted electrons and ions.阴极发射等离子体时, 单孔PHC的上/下游电流

Fig. 5. Particles distribution near the convolute of the plasmas motion, the purple is electrons, the yellow is ions (unit of the Y/Z-axis: m): (a) t = 15.8535 ns; (b) t = 23.7802 ns; (c) t = 31.7069 ns; (d) t = 55.4871 ns; (e) t = 71.3401 ns; (f) t = 103.0475 ns. 柱-孔附近等离子体随时间运动分布的二维图, 紫色代表电子, 黄色代表质子(横坐标和纵坐标单位: m)　(a) t = 15.8535 ns; (b) t = 23.7802 ns; (c) t = 31.7069 ns; (d) t = 55.4871 ns; (e) t = 71.3401 ns; (f) t = 103.0475 ns

Fig. 6. Density distribution of the cathode plasma when time is 20 ns.20 ns时刻, 阴极等离子体的密度分布

Fig. 7. Motion curve of the front of the plasma density.等离子体密度前沿位置随时间变化曲线

Fig. 8. The upstream and the downstream currents of the single-hole PHC while the cathode emitted electrons, ions, and negative ions.阴极等离子体含负离子时, 单孔PHC的上/下游电流

Fig. 9. Particles distribution near the convolute of the plasmas motion (unit of the Y/Z-axis: m): (a) t = 15.4005 ns; (b) t = 21.7419 ns; (c) t = 34.4247 ns; (d) t = 59.7902 ns; (e) t = 97.8381 ns; (f) t = 108.6064 ns. 柱-孔附近等离子体随时间运动分布的二维图(横坐标和纵坐标单位: m)　(a) t = 15.4005 ns; (b) t = 21.7419 ns; (c) t = 34.4247 ns; (d) t = 59.7902 ns; (e) t = 97.8381 ns; (f) t = 108.6064 ns

Fig. 10. Motion curve of the front of the negative density.负离子密度前沿位置随时间变化曲线

Fig. 11. Experimental data of the gap closure speed.阴阳极间隙闭合速率