Optika Atmosfery i Okeana Journal

Vol. 37, issue 03, article # 3

Rodimova O. B. Absorption coefficient of CO₂ dimers within 4.3 and 15 mm CO₂ bands. // Optika Atmosfery i Okeana. 2024. V. 37. No. 03. P. 203–206. DOI: 10.15372/AOO20240303 [in Russian].
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Abstract:

Absorption due to (СО₂)₂ dimers is estimated as the difference between the experimental CO₂ absorption and that calculated on the basis of the asymptotic line wing theory. This procedure successfulness depends on the quantity and quality of the given experimental data. Available absorption data on the absorption within the 4.3 and 15 mm СО₂ bands do not satisfy in full these requirements. However the qualitative agreement of the dimer absorption obtained with the measured and calculated positions of the (СО₂)₂ bands allows one to say about the procedure as about additional way of estimate absorption of the stable dimers of the H₂O and CO₂ molecules important for the atmospheric IR absorption.

Keywords:

IR spectrum, carbon dioxide, dimers (СО2)2, spectral line wings

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