2.0 μm处CO2高温谱线参数测量研究

Translated title of the contribution: Study of CO2 spectroscopic parameters at high temperature near 2.0 μm

Jiu Ying Chen, Jian Guo Liu*, Ya Bai He, Liao Wang, Qiang Gang, Zhen Yu Xu, Lu Yao, Song Yuan, Jun Ruan, Jun Feng He, Yun Hai Dai, Rui Feng Kan

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Reliable spectroscopic parameters of probed species at high temperature, such as line strengths, self-broadening coefficients, air-broadening coefficients, and temperature exponents, are important in absorption spectroscopy for accurately studying species properties, such as temperature, concentration, speed, and their corresponding field distributions. However, parameters from widely used database such as HITEMP are mainly theoretical calculation results, and there exist considerable errors compared with the results in actual situations. In order to validate spectroscopic parameters of CO2 lines used in combustion diagnosis, CO2 spectrum is recorded as a function of temperature in a range between 700 K and 1300 K in experiment using a distributed feed-back diode laser. Parameters of each line are deduced, such as line strengths, self-broadening coefficients and temperature exponents. The relative errors between measured and calculated line-strengths are less than 11% at 5006.978 cm-1 and 5007.7874 cm-1. The measured self-broadening coefficients at different temperatures and temperature exponents are conducive to the detection of CO2 concentration in combustion diagnostics.

Original languageChinese
Article number224206
Pages (from-to)1-7
Number of pages7
JournalWuli Xuebao/Acta Physica Sinica
Volume62
Issue number22
DOIs
Publication statusPublished - 20 Nov 2013
Externally publishedYes

Keywords

  • High temperature spectrum
  • Self-broadening coefficient
  • Temperature exponent
  • Tunable diode laser absorption spectroscopy

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    Chen, J. Y., Liu, J. G., He, Y. B., Wang, L., Gang, Q., Xu, Z. Y., ... Kan, R. F. (2013). 2.0 μm处CO2高温谱线参数测量研究. Wuli Xuebao/Acta Physica Sinica, 62(22), 1-7. [224206]. https://doi.org/10.7498/aps.62.224206