MEASUREMENT OF THE GROUND-STATE AND METASTABLE ATOMIC NITROGEN NUMBER DENSITY IN A LOW-PRESSURE PLASMA-JET - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Plasma Sources Science and Technology Année : 1995

MEASUREMENT OF THE GROUND-STATE AND METASTABLE ATOMIC NITROGEN NUMBER DENSITY IN A LOW-PRESSURE PLASMA-JET

Résumé

The radial profiles of metastable and ground state atomic number densities at numerous sections of a supersonic nitrogen plasma jet have been derived from UV absorption and emission spectroscopy. An original method that provides the ground state number density from the ratio of the intensities of the 119.955, 120.022 and 120.071 nm resonance lines has been developed. Along the jet axis direction, and similarly to the N and N-2(+) excited states, the N ground state density decreases more steeply at the centre of the jet than at its border. At the exit of the plasma source, our results throw doubt upon the nitrogen dissociation rate usually considered in the literature.

Domaines

Plasmas

Dates et versions

hal-00639594 , version 1 (09-11-2011)

Identifiants

Citer

Arnaud Bultel, Bruno Cheron, Pierre Vervisch. MEASUREMENT OF THE GROUND-STATE AND METASTABLE ATOMIC NITROGEN NUMBER DENSITY IN A LOW-PRESSURE PLASMA-JET. Plasma Sources Science and Technology, 1995, 4 (4), pp.597-605. ⟨10.1088/0963-0252/4/4/011⟩. ⟨hal-00639594⟩
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