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Article Dans Une Revue Journal of Quantitative Spectroscopy and Radiative Transfer Année : 2019

Quantifying methane vibrational and rotational temperature with Raman scattering

Tom Butterworth
  • Fonction : Auteur
D.V.D. V D Bekerom
  • Fonction : Auteur
A.V.D. V D Steeg
  • Fonction : Auteur
T. Minea
N. Gatti
  • Fonction : Auteur
Q. Ong
  • Fonction : Auteur
C. van Kruijsdijk
  • Fonction : Auteur
J.T. T Smits
  • Fonction : Auteur
A.P. P van Bavel
  • Fonction : Auteur
G.J. J van Rooij
  • Fonction : Auteur

Résumé

This work describes the theoretical basis and implementation of the measurement of vibrational (T vib) and rotational (T rot) temperatures in CH 4 by fitting spontaneous Raman scattering spectra in the Pentad region. This method could be applied for thermal equilibrium temperature measurements applications, e.g. in combustion, or vibrational-rotational non-equilibrium applications, such as in plasma chemistry. The method of calculating these temperatures is validated against known temperature thermal equilibrium spectra up to 860 K from published data, giving an estimated relative error of 10%. This demonstrates that both the calculated stick spectrum and the algorithm to determine T vib and T rot for CH 4 is robust to 860 K, but we expect it is valid to 1500 K. Additionally, a number of non-equilibrium spectra generated with a pulsed microwave plasma are fitted to find T vib and T rot , further demonstrating the applicability of this method in fitting non-equilibrium spectra.
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Dates et versions

hal-03030711 , version 1 (17-12-2020)

Identifiants

Citer

Tom Butterworth, Badr Amyay, D.V.D. V D Bekerom, A.V.D. V D Steeg, T. Minea, et al.. Quantifying methane vibrational and rotational temperature with Raman scattering. Journal of Quantitative Spectroscopy and Radiative Transfer, 2019, 236, pp.106562. ⟨10.1016/j.jqsrt.2019.07.005⟩. ⟨hal-03030711⟩
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