The global processing of a set of observed positions of spectral lines in the A2Σ+→X2П, B2Σ+→A2Σ+, and A2Σ+→A2Σ+ electronic transitions, collected from available literature has been performed. The analysis is based on a global model, which assumes the vibrational dependence of the parameters of the effective Hamiltonian for a given electronic state. As a result of processing a more extensive data set, new parameters of the "Dunham" type were obtained for the A2Σ+ electronic state, which make it possible to simulate the vibrational-rotational energy levels for the OH radical in the A2Σ+ electronic state.
The global processing of a set of experimental frequencies of electronic-vibrational-rotational transitions collected from available literature has been performed. As a result of global processing, involving the vibrational dependence of the parameters, "Dunham type" coefficients were found for A2Σ and molecular constants for the B2Σ, C2Σ electronic states of the 16OH radical.
The results of critical evaluation of measured rotation-vibration line positions of 16OH in the X2 Π state are presented. The analysis was carried out using the fundamental Rydberg-Ritz combination principle, for the available experimental data in the spectral range 101-10358 cm-1. As a result, the precise set of 990 experimental energy levels of OH molecule in the interval 0-35665 сm-1 was obtained. Comparisons with the HITRAN and with known calculated energy levels are discussed.
The results of critical evaluation of measured rotation-vibration line positions of 14N16O in the X2π state are presented. The analysis was carried out using the fundamental Rydberg-Ritz combination principle, for the available experimental data in the spectral range 1700-7400 cm-1 which represent unresolved Λ-doublets. As a result, the precise set of 1802 experimental energy levels of NO molecule in the interval 0-35665 сm-1 were obtained. Comparisons with the HITRAN and with the calculated energy levels from C.Amiot (1982) are discussed.
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