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Abstract The THz rotational lines of CH+ and its isotopologues have been observed in the range of 0.9–2.6 THz with JPL frequency multiplication chains. They were analyzed together with the known… Click to show full abstract
Abstract The THz rotational lines of CH+ and its isotopologues have been observed in the range of 0.9–2.6 THz with JPL frequency multiplication chains. They were analyzed together with the known A 1 Π - X 1 Σ + band system data by using the Dunham formulation and the conventional vibration–rotation energy formula. The Λ -doubling in 1 Π states was reexamined, and the doubling or shifts were found to be different for the e- and f-parity levels. In this investigation, the e- and f-parity states were treated as two separate states. The major molecular constants were determined accurately for these two states separately, and were compared with the values obtained previously.
Journal Title: Journal of Molecular Spectroscopy
Year Published: 2018
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