On the collision quenching of by N2 and O2 and its influence on the measurement of E/N by intensity ratio of nitrogen spectral bands

G Dilecce (1, 2) , P F Ambrico (1) , S de Benedictis (1)

1 Istituto di Metodologie Inorganiche e dei Plasmi-CNR
2 Istituto di Fotonica e Nanotecnologie-CNR

+ 2 (B 2 Σ + u, v = 0) by N 2 and O 2 and its influence on the measurement of E/N by intensity ratio of nitrogen spectral bands Abstract. Laser induced fluorescence measurements of the rate coefficients of N + 2 (B 2 Σ + u, v = 0) collision quenching by N 2 and O 2 are presented. The values of (8.84 ± 0.37) × 10 −10 cm 3 s −1 and (10.45 ± 0.45) × 10 −10 cm 3 s −1 have been found for N 2 and O 2 respectively. The present results agree well with literature data obtained by selective methods for ion B state excitation. The data are discussed in the frame of the spectroscopic evaluation of the reduced electric field in electrical discharges at high pressure, that makes use of the Second Positive System (SPS) and First Negative System (FNS) emissions of nitrogen. Collision quenching of N + 2 (B 2 Σ + u, v = 0) by N 2 and O 2 2

Mots clés: Spectroscopic Techniques; Plasma Diagnostics; LIF; corresponding author: [e-mail]

G Dilecce, P F Ambrico, S de Benedictis. On the collision quenching of by N2 and O2 and its influence on the measurement of E/N by intensity ratio of nitrogen spectral bands. Journal of Physics D: Applied Physics, 2010, 43 (19), pp.195201. ⟨10.1088/0022-3727/43/19/195201⟩. ⟨hal-00569602⟩