Rovibrational Overtone and Combination Bands of the HCNH+ Ion
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| Format: | Preprint |
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2025
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| _version_ | 1866916658033983488 |
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| author | Kassayová, Miroslava Jiménez-Redondo, Miguel Sarka, János Dohnal, Petr Glosík, Juraj Caselli, Paola Jusko, Pavol |
| author_facet | Kassayová, Miroslava Jiménez-Redondo, Miguel Sarka, János Dohnal, Petr Glosík, Juraj Caselli, Paola Jusko, Pavol |
| contents | Spectra of vibrational overtone and combination bands from vibrational ground state of HCNH+ were measured using an action spectroscopy technique with active background suppression in a cryogenic 22 pole radio frequency ion trap apparatus. Spectroscopic constants for the upper vibrational levels of the transitions were determined with vibrational band origins being 6846.77981(90) $\text{cm}^{-1}$ ($2ν_1$ , NH stretch), 6640.47624(43) $\text{cm}^{-1}$ ($ν_1 + ν_2$), 6282.03578(63) $\text{cm}^{-1}$ ($2ν_2$, CH stretch), and 6588.4894(20) $\text{cm}^{-1}$ ($ν_2 + ν_3 + 2ν_5^0$). State of the art ab initio VCI calculations up to 10000 $\text{cm}^{-1}$ complement the experimental data. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_15988 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rovibrational Overtone and Combination Bands of the HCNH+ Ion Kassayová, Miroslava Jiménez-Redondo, Miguel Sarka, János Dohnal, Petr Glosík, Juraj Caselli, Paola Jusko, Pavol Astrophysics of Galaxies Atomic Physics Plasma Physics Spectra of vibrational overtone and combination bands from vibrational ground state of HCNH+ were measured using an action spectroscopy technique with active background suppression in a cryogenic 22 pole radio frequency ion trap apparatus. Spectroscopic constants for the upper vibrational levels of the transitions were determined with vibrational band origins being 6846.77981(90) $\text{cm}^{-1}$ ($2ν_1$ , NH stretch), 6640.47624(43) $\text{cm}^{-1}$ ($ν_1 + ν_2$), 6282.03578(63) $\text{cm}^{-1}$ ($2ν_2$, CH stretch), and 6588.4894(20) $\text{cm}^{-1}$ ($ν_2 + ν_3 + 2ν_5^0$). State of the art ab initio VCI calculations up to 10000 $\text{cm}^{-1}$ complement the experimental data. |
| title | Rovibrational Overtone and Combination Bands of the HCNH+ Ion |
| topic | Astrophysics of Galaxies Atomic Physics Plasma Physics |
| url | https://arxiv.org/abs/2503.15988 |