Radiation from an equilibrium CO2–N2 plasma in the [250–850 nm] spectral region: II. Spectral modelling

Mario Lino da Silva (1) , Damien Vacher (2) , Michel Dudeck (3) , Pascal André (2) , Géraldine Faure (2)

1 Instituto de Plasmas e Fusao Nuclear
2 LAEPT - Laboratoire arc électrique et plasmas thermiques
3 LA - Laboratoire d'aérothermique

In the first part of this work, described in a previous paper, the thermodynamic conditions in an atmospheric pressure inductively coupled CO2–N2 plasma have been determined, and the radiation emission spectrum has been measured and calibrated in the [250–850 nm] spectral region. In the second part of this work, a synthetic radiation spectrum is obtained taking into account (a) the geometry of the plasma torch and (b) the local thermodynamic conditions of the plasma. This synthetic spectrum has then been compared against the measured spectrum. The good agreement between the two spectra allows validating the spectral database of the line-by-line code SPARTAN for the simulation of the radiative emission of CO2–N2 plasmas from the near-UV to the near-IR spectral region.

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

Mario Lino da Silva, Damien Vacher, Michel Dudeck, Pascal André, Géraldine Faure. Radiation from an equilibrium CO2–N2 plasma in the [250–850 nm] spectral region: II. Spectral modelling. Plasma Sources Science and Technology, 2008, 17, pp.035013. ⟨hal-00294216⟩