Saha equation 8 Arc plasma 6 Density profile 6 Electron temperature 6 Axisymmetric 4 Cavity resonators 4 Chemical equilibriums 4 Cutting torch 4 Density of gases 4 Equations of state 4 Gas density 4 Gas density measurement 4 Heavy particles 4 High energy densities 4 High-energy densities 4 Kinetic equilibrium 4 Local thermodynamic equilibrium 4 Mass flow rate 4 Nozzles 4 Oxygen 4 Phase equilibria 4 Physical interpretation 4 Plasma equations 4 Plasma species 4 Quasineutrality 4 Radial profiles 4 Schlieren techniques 4 Statistical equilibrium 4 Through the arcs 4 Two wavelength 4