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- Title
Electron Capture from Molecular Hydrogen by Metastable Sn 2 + * Ions.
- Authors
Bijlsma, Klaas; Oltra, Lamberto; de Wit, Emiel; Assink, Luc; Rabadán, Ismanuel; Méndez, Luis; Hoekstra, Ronnie
- Abstract
Over a wide and partly overlapping energy range, the single-electron capture cross-sections for collisions of metastable Sn 2 + (5 s 5 p P o 3) ( Sn 2 + ∗ ) ions with H 2 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 Sn 3 + with H 2 . The measured capture cross-sections for Sn 2 + ∗ 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.
- Subjects
ELECTRON capture; TIN; SEMICLASSICAL limits; LASER plasmas; HYDROGEN; ION-molecule collisions
- Publication
Atoms (2218-2004), 2024, Vol 12, Issue 2, p9
- ISSN
2218-2004
- Publication type
Article
- DOI
10.3390/atoms12020009