High-power microwave discharge for producing large-area surface-wave plasmas

The theory of surface-wave discharge is introduced. A novel structure of the slot antenna array is designed in this paper, and its excitation is numerical analyzed using dipole-antenna array model and FDTD method, respectively. A microwave discharge experiment is operated with this slot-antenna array, and a numerical simulation is also done with FDTD code using the parameter of plasma from experimental measurement. It is found that the designed slot antenna array can excite effectively the microwave coupling into the cavity, and produce the stable large-area high-density plasma.