Electron capture from molecular hydrogen by metastable Sn2+* Ions
Over a wide and partly overlapping energy range, the single-electron capture cross-sections for collisions of metastable (Formula presented.) ((Formula presented.)) ions with (Formula presented.) molecules were measured (0.1–10 keV) and calculated (0.3–1000 keV). The semi-classical calculations use...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/718609 |
| Acceso en línea: | http://hdl.handle.net/10486/718609 https://dx.doi.org/10.3390/atoms12020009 |
| Access Level: | acceso abierto |
| Palabra clave: | electron capture EUV source ion–molecule collisions laser-produced plasma molecular hydrogen Sn Química |
| Sumario: | Over a wide and partly overlapping energy range, the single-electron capture cross-sections for collisions of metastable (Formula presented.) ((Formula presented.)) ions with (Formula presented.) molecules were measured (0.1–10 keV) and calculated (0.3–1000 keV). The semi-classical calculations use a close-coupling method on a basis of electronic wavefunctions of the (SnH2)2+ system. The experimental cross-sections were extracted from double collisions in a crossed-beam experiment of (Formula presented.) with (Formula presented.). The measured capture cross-sections for (Formula presented.) show good agreement with the calculations between 2 and 10 keV, but increase toward lower energies, whereas the calculations decrease. Additional Landau–Zener calculations were performed and show that the inclusion of spin-orbit splitting cannot explain the large cross-sections at the lowest energies which we now assume to be likely due to vibrational effects in the molecular hydrogen target |
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