De-excitation of N2 (C 3Πu ; ν′ = 0 and 1) levels in mixtures of oxygen and nitrogen

Millet, P.; Salamero, Y.; Brunet, H.; Galy, Jean; Blanc, D.; Teyssier, J.L.

doi:10.1063/1.1679214

Cited by 41 publications

(16 citation statements)

References 13 publications

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“…Most of the data [13,14] are given for quenching of v=0. For higher vibrational levels of the C-state, where vibrational relaxation is also important, the results are given for v = 1 by Calo and Axtmann [15] -who have even attempted to separate the vibrational relaxation from the collisional quenching -Millet et al [16] We should also mention the work of K.A. Satter [19] partially connected with our problem.…”

Section: Introductionmentioning

confidence: 78%

Excitation of theC 3 П u state of N2 by an electron swarm

1983

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In this paper we present data for excitation and quenching rate coefficients of the N 2 (CSH,) state as a whole and for its v=0, v=l and v=2 vibrational levels. The results have been obtained using a steady state non-selfsustained discharge in pure nitrogen (and also in a 95 % N2+5 % H 2 mixture) and by absolute measurements of radiation from the gas. We also discuss in detail our experimental apparatus and procedure.

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Section: Introductionmentioning

confidence: 78%

Excitation of theC 3 П u state of N2 by an electron swarm

1983

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“…A non-exhaustive list of the published rates of these quenching reactions can be found in Tables 4 and 5, where the temperature is indicated when known. Most of the data were obtained at ambient temperature, though a few measurements were done at T around 2000 K. 18,[27][28][29][30][31][32] To deduce from our density measurements the quenching rates of N 2 (B) and N 2 (C) by O 2 , the rates of quenching of N 2 (B) and N 2 (C) by N 2 were taken from the literature. 18,[27][28][29][30] The rates for N 2 (B) and N 2 (C) quenching by O 2 were deduced at about 2000 K, the approximate temperature of our experiments using: 27 Pancheshnyi et al, 30 Millet et al, 28 Mitchell, 29 Packan, 34 and Bak et al 33 ).…”

Section: Absolute Density Measurements and Resulting Quenching Ratesmentioning

confidence: 99%

Ultrafast Heating in Nanosecond Discharges in Atmospheric Pressure Air

Pai

Rusterholtz

Stancu

et al. 2012

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

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Nanosecond Repetitively Pulsed Discharges have been proven to be efficient in flame stabilization. A two-step mechanism was proposed to explain the increased reactivity afforded by the discharge. This mechanism first creates excited electronic states of nitrogen, which then dissociate molecular oxygen through quenching reactions. In this paper, we investigated the temperature of the gas during and after the discharge using Optical Emission Spectroscopy on the second positive system of nitrogen, and simulated spectra from SPECAIR. The spatial profiles of excited nitrogen species densities in the discharge were determined using Abelinverted spectra of the first and second positive system of nitrogen. The time evolution of the absolute density of N 2 (B) and N 2 (C) was also determined and the quenching rates of N 2 (B) and N 2 (C) by collisions with O 2 were found to be 2.5 (±0.5)x10 -10 cm 3 .s -1 and 5.2 (±0.5)x10 -10 cm 3 .s -1 at 2000 K.

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“…Recent lifetime determinations by ~1illet et al [467] are at too high pressures to be convincing, and give a larger lifetime for v'=l than for v'=O. Calo and Axtmann [116] have also observed T for v'=l to be larger than for v' =0.…”

Section: Radiative Lifetimes and '-Valuesmentioning

confidence: 92%

The spectrum of molecular nitrogen

Lofthus¹,

Krupenie²

1977

Journal of Physical and Chemical Reference Data

1,537

808

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This is a critical review and compilation of the observed and pre dieted spectroscopic data on the molecule N2 and its ions N2-, N2+, N 22+, and the molecule N 3' Each electronic band system is discussed in detail, and tables of band origins and heads are given. In addition to the gas phase electronic, electron and Raman spectra, there are also examined the spectra of condensed molecular nitrogen as well as the pressure-and field-induced infrared and microwave absorption. Dissociation energy of N2J predissociations, and perturbations arc discussed. Potential energy curves are given, as well as radiative lifetimes, .f-values, and Franck-Condon integrals. Molecular constants are listed for the known electronic states. Electronic structure and theoretical calcull;Ltions are reviewed.

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De-excitation of N2 (C 3Πu ; ν′ = 0 and 1) levels in mixtures of oxygen and nitrogen

Cited by 41 publications

References 13 publications

Excitation of theC 3 П u state of N2 by an electron swarm

Excitation of theC 3 П u state of N2 by an electron swarm

Ultrafast Heating in Nanosecond Discharges in Atmospheric Pressure Air

The spectrum of molecular nitrogen

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