Quenching Rates of N$_2$(C$^3Π_u$ , $ν$ = 0-4) States by O$_2$, N$_2$, H$_2$, CO$_2$ and CH$_4$
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| Format: | Preprint |
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2025
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| _version_ | 1866929728865173504 |
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| author | de la Méchenie, Jean-Loup Du Garreau Perrin-Terrin, Jean-Baptiste Laux, Christophe O |
| author_facet | de la Méchenie, Jean-Loup Du Garreau Perrin-Terrin, Jean-Baptiste Laux, Christophe O |
| contents | This work presents the development of a protocol for the measurement of collisional deexcitation rate constants of N$_2$(C$^3Π_u$ , $ν$ = 0-4) States by O$_2$, N$_2$, H$_2$, CO$_2$ and CH$_4$. Excited nitrogen is produced using nanosecond repetitively pulsed discharges. The applied voltage and the repetition frequencies are adjusted to minimize rotational and gas heating while keeping high electronic and vibrational excitation levels. The populations of the vibrational levels are measured using optical emission spectroscopy of the N$_2$(C $\to$ B,$Δ_ν=0$) vibrational bands. Rate coefficients for each vibrational level are then determined from the measured lifetimes. The results are compared to the available literature and new values are provided for the missing vibrational levels. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_16985 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quenching Rates of N$_2$(C$^3Π_u$ , $ν$ = 0-4) States by O$_2$, N$_2$, H$_2$, CO$_2$ and CH$_4$ de la Méchenie, Jean-Loup Du Garreau Perrin-Terrin, Jean-Baptiste Laux, Christophe O Plasma Physics This work presents the development of a protocol for the measurement of collisional deexcitation rate constants of N$_2$(C$^3Π_u$ , $ν$ = 0-4) States by O$_2$, N$_2$, H$_2$, CO$_2$ and CH$_4$. Excited nitrogen is produced using nanosecond repetitively pulsed discharges. The applied voltage and the repetition frequencies are adjusted to minimize rotational and gas heating while keeping high electronic and vibrational excitation levels. The populations of the vibrational levels are measured using optical emission spectroscopy of the N$_2$(C $\to$ B,$Δ_ν=0$) vibrational bands. Rate coefficients for each vibrational level are then determined from the measured lifetimes. The results are compared to the available literature and new values are provided for the missing vibrational levels. |
| title | Quenching Rates of N$_2$(C$^3Π_u$ , $ν$ = 0-4) States by O$_2$, N$_2$, H$_2$, CO$_2$ and CH$_4$ |
| topic | Plasma Physics |
| url | https://arxiv.org/abs/2502.16985 |