Magnetic dipole and electric quadrupole absorption in carbon dioxide. (January 2021)

• Record Type: Journal Article
• Authors: Perevalov, V.I.; Trokhimovskiy, A Yu.; Lukashevskaya, A.A.; Korablev, O.I.; Fedorova, A.; Montmessin, F.
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 259(2021)
• Publication Date: 2021-01
• Subjects: Carbon dioxide -- Magnetic dipole absorption -- Electric quadrupole absorption -- Selection rules -- Line intensity theory -- Magnetic dipole band; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2020.107408
• Languages: English
• ISSNs: 0022-4073

Abstract

Highlights: Equation for the transition electric quadrupole moment squared of carbon dioxide. Selection rules for the magnetic dipole and electric quadrupole absorption spectra of carbon dioxide. Observed value of the vibrational transition magnetic dipole moment for the 01111–00001 band of 12 C 16 O2 . Abstract: Magnetic dipole and electric quadrupole absorption in carbon dioxide are addressed in details. The selection rules for both processes are presented. The equations for the line intensities are given. In the case of the quadrupole absorption the Herman-Wallis functions are derived. The results of the present paper were used in the analysis of the carbon dioxide absorption band at 3.3 µm in the atmosphere of Mars (Trokhimovskiy A, Perevalov V, Korablev O, Fedorova A, Olsen KS, Bertaux JL, Patrakeev A, Shakun A, Montmessin F, Lefèvre F, Lukashevskaya A. First observation of the magnetic dipole CO2 absorption band at 3.3 µm in the atmosphere of Mars by ExoMars Trace Gas Orbiter ACS instrument. A&A 639, A142 (2020)). The retrieved from the Martian atmosphere spectra vibrational transition magnetic dipole moment for the 01111–00001 (ν2 +ν3 ) band of 12 C 16 O2 M 01111 ← 000001 | Δ ℓ 2 | = 1 = 0.96 μ N (where μ N is nuclear magneton) is one order of magnitude larger than the gyromagnetic ratio in the case of the rotation-induced magnetic dipole moment. Graphical abstract: Image, graphical abstract