Line intensities of the 01111–00001 magnetic dipole absorption band of 12C16O2: Laboratory measurements.

• Laboratory measured line intensities of the 01111–00001 magnetic dipole band of 12C16O 2. • Measured line intensities of the 01111–00001 electric dipole band of 16O12C18O. • Refined value of the vibrational transition magnetic dipole moment for the 01111–00001 band of 12C16O 2. The spectra of carbon dioxide in the 3.3 µm region were recorded at three pressures using Bruker IFS 125 HR Fourier transform spectrometer and a 30 m base multipass gas cell of V.E. Zuev Institute of Atmospheric Optics SB RAS. Several lines of the 01111–00001 (ν 2 + ν 3) magnetic dipole band of 12C16O 2 were detected and their line intensities were measured. The vibrational transition magnetic dipole moment was fitted to the observed line intensities. The fitted value of the vibrational transition magnetic dipole moment of 0.71(1) µ N is substantially smaller than the value of 0.96µ N obtained in the result of the analysis of the Martian atmosphere spectra (here µ N is the nuclear magneton). Using the known set of the effective Hamiltonian parameters and fitted value of the vibrational transition magnetic dipole moment the list of the line parameters of this band was generated for the HITRAN database. In addition the line intensities of the R-branch of the electric dipole 01111–00001 band of the 16O12C18O isotopologue were measured for the first time. [ABSTRACT FROM AUTHOR]