Temperature-dependent measurements and modeling of absorption by CO2-N2 mixtures in the far line-wings of the 4.3μm CO2 band

M. Y. Perrin; J. M. Hartmann

doi:10.1016/0022-4073(89)90077-0

Temperature-dependent measurements and modeling of absorption by CO₂-N₂ mixtures in the far line-wings of the 4.3μm CO₂ band

M. Y. Perrin
, J. M. Hartmann

Ecole Centrale Paris

Research output: Contribution to journal › Article › peer-review

Abstract

We present experimental results on the absorption by CO₂-N₂ mixtures in the 4.3 μm region. Measurements have been made in the 300-800 K and 0-60 bar ranges; these are in good agreement with previous determinations below 296 K. Frequency- and temperature-dependent factors χ are introduced in order to account for the subLorentzian behavior of the CO₂ far line-wings. Their dependences on temperature are deduced from experimental results beyond the 4.3μm band-head in the 193-773 K range for both CO₂-CO₂ and CO₂-N₂ and fitted by simple analytical functions. Comparisons are presented between experimental and theoretical spectra on both the low- and high-frequency sides of the band (2100-2600 cm^-1 range). It is shown that calculations using χ factors are inaccurate near line-centers at elevated pressures.

Original language	English
Pages (from-to)	311-317
Number of pages	7
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/0022-4073(89)90077-0
Publication status	Published - 1 Jan 1989
Externally published	Yes

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title = "Temperature-dependent measurements and modeling of absorption by CO2-N2 mixtures in the far line-wings of the 4.3μm CO2 band",

abstract = "We present experimental results on the absorption by CO2-N2 mixtures in the 4.3 μm region. Measurements have been made in the 300-800 K and 0-60 bar ranges; these are in good agreement with previous determinations below 296 K. Frequency- and temperature-dependent factors χ are introduced in order to account for the subLorentzian behavior of the CO2 far line-wings. Their dependences on temperature are deduced from experimental results beyond the 4.3μm band-head in the 193-773 K range for both CO2-CO2 and CO2-N2 and fitted by simple analytical functions. Comparisons are presented between experimental and theoretical spectra on both the low- and high-frequency sides of the band (2100-2600 cm-1 range). It is shown that calculations using χ factors are inaccurate near line-centers at elevated pressures.",

author = "Perrin, \{M. Y.\} and Hartmann, \{J. M.\}",

year = "1989",

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T1 - Temperature-dependent measurements and modeling of absorption by CO2-N2 mixtures in the far line-wings of the 4.3μm CO2 band

AU - Perrin, M. Y.

AU - Hartmann, J. M.

PY - 1989/1/1

Y1 - 1989/1/1

N2 - We present experimental results on the absorption by CO2-N2 mixtures in the 4.3 μm region. Measurements have been made in the 300-800 K and 0-60 bar ranges; these are in good agreement with previous determinations below 296 K. Frequency- and temperature-dependent factors χ are introduced in order to account for the subLorentzian behavior of the CO2 far line-wings. Their dependences on temperature are deduced from experimental results beyond the 4.3μm band-head in the 193-773 K range for both CO2-CO2 and CO2-N2 and fitted by simple analytical functions. Comparisons are presented between experimental and theoretical spectra on both the low- and high-frequency sides of the band (2100-2600 cm-1 range). It is shown that calculations using χ factors are inaccurate near line-centers at elevated pressures.

AB - We present experimental results on the absorption by CO2-N2 mixtures in the 4.3 μm region. Measurements have been made in the 300-800 K and 0-60 bar ranges; these are in good agreement with previous determinations below 296 K. Frequency- and temperature-dependent factors χ are introduced in order to account for the subLorentzian behavior of the CO2 far line-wings. Their dependences on temperature are deduced from experimental results beyond the 4.3μm band-head in the 193-773 K range for both CO2-CO2 and CO2-N2 and fitted by simple analytical functions. Comparisons are presented between experimental and theoretical spectra on both the low- and high-frequency sides of the band (2100-2600 cm-1 range). It is shown that calculations using χ factors are inaccurate near line-centers at elevated pressures.

U2 - 10.1016/0022-4073(89)90077-0

DO - 10.1016/0022-4073(89)90077-0

M3 - Article

AN - SCOPUS:0000715102

SN - 0022-4073

VL - 42

SP - 311

EP - 317

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

IS - 4

ER -

Temperature-dependent measurements and modeling of absorption by CO2-N2 mixtures in the far line-wings of the 4.3μm CO2 band

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Temperature-dependent measurements and modeling of absorption by CO₂-N₂ mixtures in the far line-wings of the 4.3μm CO₂ band