A. M. Molchanov, D. S. Yanyshev, L. V. Bykov, A. S. Kovalenko
{"title":"Calculation of the Emission Characteristics of Thermally Nonequilibrium CO2 Gas in the Range of 3200–5400 cm–1 Using the Line-by-Line and Statistical Narrow-Band Models","authors":"A. M. Molchanov, D. S. Yanyshev, L. V. Bykov, A. S. Kovalenko","doi":"10.1134/S1063778824090217","DOIUrl":null,"url":null,"abstract":"<p>A method for calculating the absorption and emission characteristics of CO<sub>2</sub> in the range from 3200 to 5400 cm<sup>–1</sup> with allowance for the effect of thermal nonequilibrium has been presented. A series of calculations using line-by-line (LBL) and statistical narrow-band (SNB) models has been performed at various pressures, spectral regions, layer thicknesses, temperatures, and molar fractions of CO<sub>2</sub>. The developed method shows good agreement between the LBL and SNB models and satisfactorily agrees with experimental data when calculating the transmission capacity. In the considered range, the nonequilibrium in rotational temperature has virtually no effect on the radiative characteristics, unlike translational and vibrational temperatures, which have a significant effect on the nonequilibrium Planck function. The resulting methodology can be used for calculations when studying the problem of global warming.</p>","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 10","pages":"1503 - 1513"},"PeriodicalIF":0.3000,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Atomic Nuclei","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063778824090217","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}
Calculation of the Emission Characteristics of Thermally Nonequilibrium CO2 Gas in the Range of 3200–5400 cm–1 Using the Line-by-Line and Statistical Narrow-Band Models
A method for calculating the absorption and emission characteristics of CO2 in the range from 3200 to 5400 cm–1 with allowance for the effect of thermal nonequilibrium has been presented. A series of calculations using line-by-line (LBL) and statistical narrow-band (SNB) models has been performed at various pressures, spectral regions, layer thicknesses, temperatures, and molar fractions of CO2. The developed method shows good agreement between the LBL and SNB models and satisfactorily agrees with experimental data when calculating the transmission capacity. In the considered range, the nonequilibrium in rotational temperature has virtually no effect on the radiative characteristics, unlike translational and vibrational temperatures, which have a significant effect on the nonequilibrium Planck function. The resulting methodology can be used for calculations when studying the problem of global warming.
期刊介绍：
Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.
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