Fourier-transform spectroscopy of (CO)-C-13-O-17 and deperturbation analysis of the A(1)II (v=0-3) levels

作者：Hakalla R^*; Niu M L; Field R W; Heays A N; Salumbides E J; Stark G; Lyons J R; Eidel**erg M; Lemaire J L; Federman S R; de Oliveira N; Ubachs W

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2017, 189: 312-328.

DOI：10.1016/j.jqsrt.2016.12.012

• FT-spectroscopy
• High resolution VUV-VIS spectra
• Perturbation analysis
• Carbon monoxide
• (CO)-C-13-O-17 isotopologue

The high-resolution B-1 Sigma(+)-> A(1)II (0, 0) and (0, 3) emission bands of the less-abundant (CO)-C-13-O-17 isotopologue have been investigated by Fourier-transform spectroscopy in the visible region using a Bruker IFS 125HR spectrometer at an accuracy 0.003 cm(-1). These spectra are combined with high-resolution photoabsorption measurements of the (CO)-C-13-O-17 B-1 Sigma(+) <- X-1 Sigma(+) (0,0), B-1 Sigma(+) <- X-1 Sigma(+) (1,0) and C-1 Sigma(+) <- X-1 Sigma(+) (0, 0) bands recorded with an accuracy of 0.01 cm(-1) using the vacuum ultraviolet Fourier-transform spectrometer, installed on the DESIRS beamline at the SOLEIL synchrotron. In the studied 17,950-22,500 cm(-1) and 86,800-92,100 cm(-1) regions, 480 transitions have been measured. These new experimental data were combined with data from the C -> A and B -> A systems, previously analyzed in (CO)-C-13-O-17. The frequencies of 1003 transitions derived from 12 bands were used to analyze the perturbations between the A(1)II (v=0-3) levels and rovibrational levels of the d(3)Delta(i), e(3)Sigma(-), a'(3)Sigma(+), I-1 Sigma(-) and D-1 Delta. states as well as to a preliminary investigation of weak irregularities that appear in the B-1 Sigma(+) (v=0) level. De perturbed molecular constants and term values of the A(1)II state were obtained. The spin-orbit and L uncoupling interaction parameters as well as isotopologue-independent spin-orbit and rotation-electronic perturbation parameters were derived.

• 出版日期2017-3
• 单位MIT