High Resolution Rovibrational and Rotational Spectroscopy of H$_2$CCCH$^+$
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| Format: | Preprint |
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2024
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| author | Silva, Weslley Guilherme Dias de Paiva Gupta, Divita Plaar, Eline Doménech, José Luis Schlemmer, Stephan Asvany, Oskar |
| author_facet | Silva, Weslley Guilherme Dias de Paiva Gupta, Divita Plaar, Eline Doménech, José Luis Schlemmer, Stephan Asvany, Oskar |
| contents | The rovibrational spectrum of the molecular ion H$_2$CCCH$^+$ was investigated in a 4~K cryogenic ion trap instrument employing the leak-out spectroscopy method. Transitions within the fundamental $ν_1$ (C-H stretch) and the combination band $ν_3$+$ν_5$ (C-C stretches) were detected, the search aided by high level quantum chemical calculations. The analysis of the rovibrational measurements enabled us to predict the rotational structure of the ground state. Using a rotational-vibrational double-resonance scheme, 14 pure rotational transitions were measured. This, in turn, led to the radio astronomical detection of H$_2$CCCH$^+$ in the interstellar medium, as recently reported (Silva et al., Astron. Astrophys. 676, L1, 2023). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00733 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High Resolution Rovibrational and Rotational Spectroscopy of H$_2$CCCH$^+$ Silva, Weslley Guilherme Dias de Paiva Gupta, Divita Plaar, Eline Doménech, José Luis Schlemmer, Stephan Asvany, Oskar Chemical Physics The rovibrational spectrum of the molecular ion H$_2$CCCH$^+$ was investigated in a 4~K cryogenic ion trap instrument employing the leak-out spectroscopy method. Transitions within the fundamental $ν_1$ (C-H stretch) and the combination band $ν_3$+$ν_5$ (C-C stretches) were detected, the search aided by high level quantum chemical calculations. The analysis of the rovibrational measurements enabled us to predict the rotational structure of the ground state. Using a rotational-vibrational double-resonance scheme, 14 pure rotational transitions were measured. This, in turn, led to the radio astronomical detection of H$_2$CCCH$^+$ in the interstellar medium, as recently reported (Silva et al., Astron. Astrophys. 676, L1, 2023). |
| title | High Resolution Rovibrational and Rotational Spectroscopy of H$_2$CCCH$^+$ |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2402.00733 |