Fine-structure transitions of the carbon isoelectronic sequence C, N$^+$ and O$^{2+}$ induced by collisions with atomic hydrogen
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| Format: | Preprint |
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2022
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| _version_ | 1866916511243829248 |
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| author | Yan, Pei-Gen Babb, James F. |
| author_facet | Yan, Pei-Gen Babb, James F. |
| contents | Fine-structure transitions can be involved in various processes including photon absorption, charge transfer and inelastic collision between ions, electrons and neutral atoms. We present fine-structure excitation and relaxation cross sections for the collisions of the first few members of the carbon isoelectronic sequence (C, N$^+$ and O$^{2+}$) with atomic hydrogen calculated using quantum-mechanical methods. For C, the scattering theory and computational approach is verified by comparison with previous calculations. The rate coefficients for the collisional processes are obtained. For N$^+$ and O$^{2+}$, the transitions correspond to the lines [\ion{O}{iii}] 52~{\textmu}m, [\ion{O}{iii}] 88~{\textmu}m, [\ion{N}{ii}] 122~{\textmu}m, and [\ion{N}{ii}] 205~{\textmu}m, observed in the far-infrared in the local Universe and more recently in high-redshift galaxies using radio interferometry. The influence of different potentials on the cross sections and rate coefficients are demonstrated. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2211_13103 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Fine-structure transitions of the carbon isoelectronic sequence C, N$^+$ and O$^{2+}$ induced by collisions with atomic hydrogen Yan, Pei-Gen Babb, James F. Atomic Physics Fine-structure transitions can be involved in various processes including photon absorption, charge transfer and inelastic collision between ions, electrons and neutral atoms. We present fine-structure excitation and relaxation cross sections for the collisions of the first few members of the carbon isoelectronic sequence (C, N$^+$ and O$^{2+}$) with atomic hydrogen calculated using quantum-mechanical methods. For C, the scattering theory and computational approach is verified by comparison with previous calculations. The rate coefficients for the collisional processes are obtained. For N$^+$ and O$^{2+}$, the transitions correspond to the lines [\ion{O}{iii}] 52~{\textmu}m, [\ion{O}{iii}] 88~{\textmu}m, [\ion{N}{ii}] 122~{\textmu}m, and [\ion{N}{ii}] 205~{\textmu}m, observed in the far-infrared in the local Universe and more recently in high-redshift galaxies using radio interferometry. The influence of different potentials on the cross sections and rate coefficients are demonstrated. |
| title | Fine-structure transitions of the carbon isoelectronic sequence C, N$^+$ and O$^{2+}$ induced by collisions with atomic hydrogen |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2211.13103 |