Overtone Transition $2ν_1$ of $\text{HCO}^+$ and $\text{HOC}^+$: Origin, Radiative Lifetime, Collisional Quenching
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| Format: | Preprint |
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2024
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| _version_ | 1866929385040248832 |
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| author | Jiménez-Redondo, Miguel Uvarova, Liliia Dohnal, Petr Kassayová, Miroslava Caselli, Paola Jusko, Pavol |
| author_facet | Jiménez-Redondo, Miguel Uvarova, Liliia Dohnal, Petr Kassayová, Miroslava Caselli, Paola Jusko, Pavol |
| contents | We present spectra of the first overtone vibration transition of $\text{C-H}$/$\text{O-H}$ stretch ($2ν_1$) in $\text{HCO}^+$ and $\text{HOC}^+$, recorded using a laser induced reaction action scheme inside a cryogenic 22 pole radio frequency trap. Band origins have been located at 6078.68411(19) and 6360.17630(26) $\text{cm}^{-1}$, respectively. We introduce a technique based on mass selective ejection from the ion trap for recording background free action spectra. Varying the number density of the neutral action scheme reactant ($\text{CO}_2$ and Ar, respectively) and collisional partner reactant inside the ion trap, permitted us to estimate the radiative lifetime of the state to be 1.53(34) and 1.22(34) ms, respectively, and the collisional quenching rates of $\text{HCO}^+$ ($2ν_1$) with He, H$_2$, and N$_2$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_08927 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Overtone Transition $2ν_1$ of $\text{HCO}^+$ and $\text{HOC}^+$: Origin, Radiative Lifetime, Collisional Quenching Jiménez-Redondo, Miguel Uvarova, Liliia Dohnal, Petr Kassayová, Miroslava Caselli, Paola Jusko, Pavol Atomic Physics Astrophysics of Galaxies Chemical Physics We present spectra of the first overtone vibration transition of $\text{C-H}$/$\text{O-H}$ stretch ($2ν_1$) in $\text{HCO}^+$ and $\text{HOC}^+$, recorded using a laser induced reaction action scheme inside a cryogenic 22 pole radio frequency trap. Band origins have been located at 6078.68411(19) and 6360.17630(26) $\text{cm}^{-1}$, respectively. We introduce a technique based on mass selective ejection from the ion trap for recording background free action spectra. Varying the number density of the neutral action scheme reactant ($\text{CO}_2$ and Ar, respectively) and collisional partner reactant inside the ion trap, permitted us to estimate the radiative lifetime of the state to be 1.53(34) and 1.22(34) ms, respectively, and the collisional quenching rates of $\text{HCO}^+$ ($2ν_1$) with He, H$_2$, and N$_2$. |
| title | Overtone Transition $2ν_1$ of $\text{HCO}^+$ and $\text{HOC}^+$: Origin, Radiative Lifetime, Collisional Quenching |
| topic | Atomic Physics Astrophysics of Galaxies Chemical Physics |
| url | https://arxiv.org/abs/2406.08927 |