THERMODYNAMIC CONSIDERATIONS AND OPTICAL EMISSION DIAGNOSTICS OF A N2/O2 MIXTURE IN AN INDUCTIVELY COUPLED AIR PLASMA

Damien Vacher (1) , Géraldine Faure (1) , Pascal André (1)

1 LAEPT - Laboratoire arc électrique et plasmas thermiques

Composition, monatomic spectral line intensities (Cu, O, N) and enthalpy are calculated for thermal and non-thermal equilibrium conditions in a plasma made of three plasma gas mixtures of N2, O2 and an aerosol of copper Sulphate in water. With these mixtures, the excitation and rotational temperatures are measured in an inductively coupled plasma (ICP) torch using monatomic Cu spectral lines and CuO molecular spectra, respectively. It is shown that with the enthalpy it is possible to deduce the electronic translation temperature for other mixtures and that this ICP torch allows to check the diatomic simulated spectra.

Mots clés: Inductively Coupled Plasma; Plasma Composition; Thermodynamic properties; Monatomic and Diatomic Spectra; Thermal non-equilibrium

Domaines: Physique des plasmas [physics.plasm-ph]

Damien Vacher, Géraldine Faure, Pascal André. THERMODYNAMIC CONSIDERATIONS AND OPTICAL EMISSION DIAGNOSTICS OF A N2/O2 MIXTURE IN AN INDUCTIVELY COUPLED AIR PLASMA. Spectrochimica Acta Part B: Atomic Spectroscopy, 2001, 56, pp.309. ⟨10.1016/S0584-8547(01)00160-4⟩. ⟨hal-00019047⟩