https://doi.org/10.1140/epjs/s11734-026-02246-6
Regular Article
Electronic processes in ion–atom and ion–molecule collisions with an asymptotic states close-coupling approach: an efficient FORTRAN solver to compute cross sections
1
School of Physics, Hangzhou Normal University, 311121, Hangzhou, China
2
Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Universitè, 75005, Paris, France
3
Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, 100088, Beijing, China
4
School of Physics, Zhejiang University, 310058, Hangzhou, China
a
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b
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Received:
25
August
2025
Accepted:
3
March
2026
Published online:
16
March
2026
Abstract
In this article, we present an efficient FORTRAN package to compute the cross sections of inelastic electronic processes occurring in ion–atom and ion–molecule collisions in the intermediate energy range. The codes rely on a semiclassical asymptotic-state close-coupling approach, which is well-established and has been used successfully for the study of various collision systems. An illustrative example on how to use the codes is provided and discussed. The availability of a free and open-source code for the investigation of inelastic electronic processes in ion–atom and ion–molecule collisions will help numerous scientists in different fields of physics in their own research. The present codes reported here are accessible via https://github.com/ccjia39/collisions_one_ele_codes.git.
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© 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.
