Quenching of N 2 ( A 3 Σ u + ) by O 2 , O, N, and H

Metastable N 2 ( A 3 Σ u + ), υ = 0, υ = 1, molecules are produced by a pulsed Tesla‐type discharge of a dilute N 2 /Ar gas mixture. Rate coefficients for quenching these metastable levels by O 2 , O, N, and H were obtained by time‐resolved emission measurements of the (0, 6) and (1, 5) Vegard–Kaplan bands. In units of cm 3 /mole · sec at 300°K and with an experimental uncertainty of ±20%, these rate coefficients for N 2 ( A 3 Σu + ) are\documentclass{article}\pagestyle{empty}\begin{document}$$k_{{\rm O2}} = 2.9 \times 10^{- 12}$$\end{document}\documentclass{article}\pagestyle{empty}\begin{document}$$k_{{\rm O}} = 1.5 \times 10^{- 11}$$\end{document}\documentclass{article}\pagestyle{empty}\begin{document}$$k_{{\rm N}} = 4.8 \times 10^{- 11}$$\end{document}\documentclass{article}\pagestyle{empty}\begin{document}$$k_{{\rm H}} = 3.5 \times 10^{- 12}$$\end{document}Within the limits of error these coefficients apply to quenching N 2 ( A 3 Σ u + ) υ′ = 1 as well.