CH4 broadening and shifting coefficients in the Fermi triad of 12C16O2 in the 2 µm region

A. V. Domanskaya, R. E. Asfin, A. A. Kyuberis, V. Ebert

Research output

Abstract

Novel experimental values of collisional broadening and shifting coefficients for the Fermi triad of CO2 in mixture with methane at 296.0(2) K were determined from high resolution FTIR measurements. An empirical function for the broadening coefficients is obtained: γn(J′) = 0.0762(7) + 0.00320(4) · exp(− 0.039(3) · J′) /cm–1/atm, here J′ refers to the final state, n = 1, 2, 3 labels the Fermi components. Expanded uncertainties (2σ) for 38 out of 55 reported values are smaller than 0.5%. The absolute values of shift coefficients are about ten times smaller than the broadening, and the relative uncertainty is larger (4–5%).

Original languageEnglish
Pages (from-to)209-216
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume235
DOIs
Publication statusPublished - 1 Sep 2019

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Methane
coefficients
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methane
shift
high resolution
Uncertainty

Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Cite this

@article{2f219881b58742de828a24f5853e3180,
title = "CH4 broadening and shifting coefficients in the Fermi triad of 12C16O2 in the 2 µm region",
abstract = "Novel experimental values of collisional broadening and shifting coefficients for the Fermi triad of CO2 in mixture with methane at 296.0(2) K were determined from high resolution FTIR measurements. An empirical function for the broadening coefficients is obtained: γn(J′) = 0.0762(7) + 0.00320(4) · exp(− 0.039(3) · J′) /cm–1/atm, here J′ refers to the final state, n = 1, 2, 3 labels the Fermi components. Expanded uncertainties (2σ) for 38 out of 55 reported values are smaller than 0.5{\%}. The absolute values of shift coefficients are about ten times smaller than the broadening, and the relative uncertainty is larger (4–5{\%}).",
keywords = "Carbon dioxide, Fermi triad, FTIR, Gas, Hydrocarbon, Infrared, Methane, Pressure broadening, Pressure shifting",
author = "Domanskaya, {A. V.} and Asfin, {R. E.} and Kyuberis, {A. A.} and V. Ebert",
year = "2019",
month = "9",
day = "1",
doi = "10.1016/j.jqsrt.2019.07.004",
language = "English",
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journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",
issn = "0022-4073",
publisher = "Elsevier",

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TY - JOUR

T1 - CH4 broadening and shifting coefficients in the Fermi triad of 12C16O2 in the 2 µm region

AU - Domanskaya, A. V.

AU - Asfin, R. E.

AU - Kyuberis, A. A.

AU - Ebert, V.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Novel experimental values of collisional broadening and shifting coefficients for the Fermi triad of CO2 in mixture with methane at 296.0(2) K were determined from high resolution FTIR measurements. An empirical function for the broadening coefficients is obtained: γn(J′) = 0.0762(7) + 0.00320(4) · exp(− 0.039(3) · J′) /cm–1/atm, here J′ refers to the final state, n = 1, 2, 3 labels the Fermi components. Expanded uncertainties (2σ) for 38 out of 55 reported values are smaller than 0.5%. The absolute values of shift coefficients are about ten times smaller than the broadening, and the relative uncertainty is larger (4–5%).

AB - Novel experimental values of collisional broadening and shifting coefficients for the Fermi triad of CO2 in mixture with methane at 296.0(2) K were determined from high resolution FTIR measurements. An empirical function for the broadening coefficients is obtained: γn(J′) = 0.0762(7) + 0.00320(4) · exp(− 0.039(3) · J′) /cm–1/atm, here J′ refers to the final state, n = 1, 2, 3 labels the Fermi components. Expanded uncertainties (2σ) for 38 out of 55 reported values are smaller than 0.5%. The absolute values of shift coefficients are about ten times smaller than the broadening, and the relative uncertainty is larger (4–5%).

KW - Carbon dioxide

KW - Fermi triad

KW - FTIR

KW - Gas

KW - Hydrocarbon

KW - Infrared

KW - Methane

KW - Pressure broadening

KW - Pressure shifting

UR - http://www.scopus.com/inward/record.url?scp=85068551041&partnerID=8YFLogxK

U2 - 10.1016/j.jqsrt.2019.07.004

DO - 10.1016/j.jqsrt.2019.07.004

M3 - Article

AN - SCOPUS:85068551041

VL - 235

SP - 209

EP - 216

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

SN - 0022-4073

ER -