Composition of a plasma generated from N2O2 by an Ar ion jet in a low pressure reactor

Kinga Kutasi (1)

1 Research Institute for Solid State Physics and Optics [Budapest]

Composition of a plasma generated from N 2 -O 2 by an Ar ion jet in a low pressure reactor2 Abstract. The expansion of a supersonic Ar + ion jet in a low pressure (0.2 Torr) reactor filled with N 2 and O 2 has been investigated by means of hydrodynamic modelling. The gas velocity fields and the gas temperature distribution in the threedimensional reactor have been determined. The formation of different species through the molecular kinetics triggered by the collision of Ar + ions with N 2 and O 2 molecules has been studied. We have investigated the effect of the ions velocity and molecular gas flow rates on the gas temperature and species density distributions. We have shown that the main difference between this system and an N 2 -O 2 post-discharge lies in the dissociation degrees of N 2 and O 2. While in an N 2 -O 2 post-discharge the N 2 dissociation degree is low and that of O 2 is high, in the present system this can be varied through the gas flow rate of the molecular gases. We have also shown that the NO(X) molecules formation is governed by the surface processes, that is strongly influenced by the state of the surface. Composition of a plasma generated from N 2 -O 2 by an Ar ion jet in a low pressure reactor3

Mots clés: Physical Sciences

Kinga Kutasi. Composition of a plasma generated from N2O2 by an Ar ion jet in a low pressure reactor. Journal of Physics D: Applied Physics, 2010, 43 (5), pp.55201. ⟨10.1088/0022-3727/43/5/055201⟩. ⟨hal-00569751⟩