Two-dimensional numerical study of an atmospheric pressure helium plasma jet with dual-power electrode*
Yan Wena), Liu Fu-Chengb), Sang Chao-Fenga), Wang De-Zhena)†
       
Comparison of electron density among different needle-to-ring discharge gaps at 240 ns after the start of pulse excitation: (a) two-dimensional distributions of electron density, (b) radial distributions of electron densities at 0.2 cm from the exit of the nozzle (line in plasma jet of Fig.  12(a) indicates the position of the radial profile).