A two-dimensional model of He/O2 atmospheric pressure plasma needle discharge
Qian Mu-Yang†a), Yang Cong-Yinga), Chen Xiao-Changa), Liu San-Qiua), Yan Wenb), Liu Fu-Chengc), Wang De-Zhenb)
       
Typical streamer propagations at 5, 10 ns after the start of the 4.5 kV pulse. (a) Electron density, (b) electron temperature, (c) positive space charge density, and (d) electric field.