Nozzle wall Nozzles 12 Cutting torch 10 Electron temperature 8 Ions 8 Space charges 8 Electron densities 6 Gas breakdown 6 Nonequilibrium plasmas 6 Plasma diagnostics 6 Arc plasma 4 Average field 4 Biasing voltages 4 Breakdown threshold 4 Carrier concentration 4 Cavity resonators 4 Cold ions 4 Drift diffusion 4 Dynamics 4 Electric fields 4 Electric potential 4 Electron density measurement 4 Experimental observation 4 Fluid dynamics 4 High energy densities 4 Hydrodynamic model 4 Insulating film 4 Ion collisions 4 Ion density 4 Ion velocity 4