Analysis of measured high-resolution doublet rovibronic spectra and related line lists of ¹²CH and ¹⁶OH

Abstract

Detailed understanding of the energy-level structure of the quantum states as well as of the rovibronic spectra of the ethylidyne (CH) and the hydroxyl (OH) radicals is mandatory for a...

Methylidyne Cavity Ring-Down Spectroscopy in a Microwave Plasma Discharge

“…The two lines near 365.6 nm are reproduced by resorting to the ExoMol [34] referenced molecular line lists, intensities and spectra (MoLLIST) [35] for the 12 C 1 H isotopologue of CH. However, analysis and establishment of high-resolution line lists of 12 CH continues to be of interest [36].…”

Numerical Equivalence of Diabatic and Adiabatic Representations in Diatomic Molecules

“…YO shows avoided crossings between the B 2 Σ + , D 2 Σ + and A 2 Π, C 2 Π states as described by Yurchenko et al YO has broad scientific interest, having been observed in stellar spectra, − and found use in solar furnaces , and magneto-optical traps. , YO is a complex system showing many low-lying electronic states; accurate descriptions of its avoided crossings will be valuable to works in several fields. CH is one of the most studied free radicals because it occurs in such a wide variety of environments: it has been observed in flames, , solar − and stellar spectra, − spectra of comets, ISM, − and molecular clouds …”

“…60,61 YO is a complex system showing many low-lying electronic states; accurate descriptions of its avoided crossings will be valuable to works in several fields. CH is one of the most studied free radicals 62 because it occurs in such a wide variety of environments: it has been observed in flames, 63,64 solar 65−67 and stellar spectra, 68−70 spectra of comets, 71 ISM, 72−75 and molecular clouds. 76 As part of the study, we also report our implementation of the full diabatic/adiabatic treatments in our code DUO, 77 a rovibronic solver of general coupled diatomic Schrodinger equations, which is used in the analyses.…”

“… 60 , 61 YO is a complex system showing many low-lying electronic states; accurate descriptions of its avoided crossings will be valuable to works in several fields. CH is one of the most studied free radicals 62 because it occurs in such a wide variety of environments: it has been observed in flames, 63 , 64 solar 65 − 67 and stellar spectra, 68 − 70 spectra of comets, 71 ISM, 72 − 75 and molecular clouds. 76 …”