Yamada, Koichi M. T., Asvany, Oskar and Schlemmer, Stephan (2022). K-type doubling in the rotational spectrum of CH3+-He: A group theoretical explanation. J. Mol. Spectrosc., 388. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1096-083X
Full text not available from this repository.Abstract
In a previous paper, we reported the pure rotational spectrum of the CH3+-He ion observed in a 22-pole ion trap by IR-MW double resonance spectroscopy [Topfer et al. (2018)]. In that work the K = 1 rotational levels in the ground state of the ion were observed to be split, i.e. the K-type doubling was observed. This finding would be consistent with a slightly asymmetric rotor of C-s symmetry, although ab-initio calculations predict that the equilibrium structure of the ion is of C-3v symmetry. In the present study we inspect the energy-level correlation-diagram between the semi-rigid symmetric-top (C-3v), the free internal-rotor (C(M) 3v ), and the semi-rigid asymmetric-top models (Cs), by using group theory, especially the correlation and reverse correlation in the symmetry representations. We find that the lowest K = 1rotational levels of the CH+3-He ion can be of A1 (R) A2 symmetry rather than of E symmetry, and thus they can be split depending on the nature of the C-He bending vibration.
| Item Type: | Journal Article | ||||||||||||||||
| Creators: |
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| URN: | urn:nbn:de:hbz:38-667545 | ||||||||||||||||
| DOI: | 10.1016/j.jms.2022.111670 | ||||||||||||||||
| Journal or Publication Title: | J. Mol. Spectrosc. | ||||||||||||||||
| Volume: | 388 | ||||||||||||||||
| Date: | 2022 | ||||||||||||||||
| Publisher: | ACADEMIC PRESS INC ELSEVIER SCIENCE | ||||||||||||||||
| Place of Publication: | SAN DIEGO | ||||||||||||||||
| ISSN: | 1096-083X | ||||||||||||||||
| Language: | English | ||||||||||||||||
| Faculty: | Unspecified | ||||||||||||||||
| Divisions: | Unspecified | ||||||||||||||||
| Subjects: | no entry | ||||||||||||||||
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| URI: | http://kups.ub.uni-koeln.de/id/eprint/66754 |
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