Experimental observation Arc plasma 4 Cutting torch 4 Dynamics 4 Insulating film 4 Ion-current signal 4 Nanostructures 4 Non destructive 4 Nonequilibrium plasmas 4 Nozzle orifice 4 Nozzle wall 4 Nozzles 4 Oxygen cutting 4 Plasma diagnostics 4 Plasma dynamics 4 Plasma fluctuations 4 Plasmas 4 Power supply 4 Space charges 4 Steady state 4 Acceleration and deceleration 2 Acid-base equilibria 2 Aerodynamics 2 Arches 2 Biology 2 Calcium dynamics 2 Charge regulation 2 Charge state 2 Cluster dynamics 2 Cluster models 2