THz spectroscopy of 12CH+, 13CH+, and 12CD+: A combined Dunham analysis of Terahertz lines and A1Π-X1Σ+ transitions
| Autor: | John C. Pearson, Shanshan Yu, Brian J. Drouin, Takayoshi Amano |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Terahertz radiation Polyatomic ion 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0103 physical sciences Isotopologue Physical and Theoretical Chemistry Atomic physics 010306 general physics 0210 nano-technology Spectroscopy Thz spectroscopy |
| Zdroj: | Journal of Molecular Spectroscopy. 350:30-36 |
| ISSN: | 0022-2852 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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