https://doi.org/10.1140/epjs/s11734-026-02255-5
Regular Article
Study of single electron capture in O6+–H2 collisions
1
Institute of Modern Physics, Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Fudan University, 200433, Shanghai, China
2
School of Physics, Hangzhou Normal University, 311121, Hangzhou, China
a
This email address is being protected from spambots. You need JavaScript enabled to view it.
b
This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
15
October
2025
Accepted:
3
March
2026
Published online:
11
March
2026
Abstract
The single electron capture process in collisions between O6+ ions and ground-state H2 molecules has been investigated both experimentally and theoretically. The absolute total and state-selective true single capture cross sections, especially for projectile excited states (n ≥ 5), were measured systematically in the energy range of 2.625–37.5 keV/u. In addition, a two-active-electron, three-center, semiclassical asymptotic-state close-coupling method was employed to calculate partial true single capture cross sections across a broad energy domain ranging from 1 to 225 keV/u. The present theoretical treatment represents the most elaborate description of this system to date, in terms of accounting for electron correlations, molecular structures, and active channels. Nevertheless, a significant discrepancy remains between the theory and the experiment for the electron capture into n ≥ 6 states at energies above 19.5 keV/u, suggesting the increasing role of electron capture into high-n states and highlighting the need for further theoretical investigations with extended basis sets to achieve a more accurate description.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
