Abstract
In this article, a new study of the 12C16O+First Negative system (B2Σ+→X2Σ+), is performed both theoretically and experimentally. From an experimental point of view, high-resolution Fourier transform spectroscopy in the ultraviolet region was used. On the theoretical side, ab initioelectronic energies were calculated employing the state-averaged multiconfiguration self-consistent field (MCSCF) method, followed by the icMRCI/AV6Z level of theory with Davidson modification. Through these two analyses, theoretical and experimental, values for the spectroscopic constants, potential energy curves, and parameters concerning the transition are presented. The results, both theoretical and experimental, obtained in this work are compared with values obtained in previous works, pointing out certain discrepancies with more recent works and providing new and improved values for the band origins of this transition.
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