Inelastic, exchange, and reactive processes in rovibrationally excited collisions of HD with H
| Autor: | Benhui Yang, Naduvalath Balakrishnan, Boyi Zhou, Phillip C. Stancil, Maodu Chen, Brian K. Kendrick |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 507:6012-6019 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/stab2381 |
| Popis: | The HD molecule is an important coolant in early universe chemistry models and a tracer of H2 in star-forming regions. Rate coefficients for collisional excitation and de-excitation of HD rotational and vibrational levels form important ingredients in astrophysical models. While collisions with He, H2, and H are the most important, available data for H + HD collisions are largely limited to temperatures less than 1000 K for the vibrational ground state, low-lying rotational levels of the v = 1 HD vibrational level, or computed without reactive contributions. Here, through explicit quantum scattering calculations, we report extensive data for rovibrational transitions in HD induced by H atoms for a range of rotational levels in v = 1 and some v = 0 levels for temperatures up to 1000 K. The significance of the computed results for astrophysical modeling is discussed. |
| Databáze: | OpenAIRE |
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