| Autor: |
Ferrer, Valentin, Gardou, Jean-Pierre, Frédéric Marchal, Ricard, André, Sarrette, Jean-Philippe |
| Předmět: |
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| Zdroj: |
European Physical Journal D (EPJ D); Oct2022, Vol. 76 Issue 10, p1-14, 14p |
| Abstrakt: |
The emission spectrum of nitrogen and of mixtures of nitrogen with noble gases (Ar, He) was studied and relative vibrational intensities of the nitrogen first positive (N2 1+) system (N2(B, v′) → N2(A, v′′) + hν) recorded between 570 and 1040 nm in the afterglow of a flowing microwave discharge at 8 Torr. In this region, N2(B, v′) relative populations were deduced from the recorded spectra and absolute N-atom concentrations measured by NO titration. Absolute N-atom densities were also obtained by TALIF, showing a good agreement between the two diagnostic methods. From this data, rate coefficients for the N-atom recombination in specific N2(B, v′) vibronic levels were obtained in N2 and in mixtures of N2 with Ar or He. Additionally, concentrations of N2(A), N2(X, v = 12–13) molecules and of N2+ ions were also deduced from band intensity ratios in the transition region between the pink and the late afterglows. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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