https://doi.org/10.1140/epjp/s13360-025-06373-2
Regular Article
Single-electron capture in proton–helium collision using three-body Coulomb–Born distorted wave (CBDW-3B) approximation
Department of Physics, Shahid Bahonar University of Kerman, Kerman, Iran
Received:
16
December
2024
Accepted:
28
April
2025
Published online:
21
May
2025
In the present context, the three-body Coulomb–Born distorted wave (CBDW-3B) approximation is used to calculate the differential and total cross sections for single-electron capture from helium atoms by proton impact. The primary four-body problem is reduced to the three-body process using the Roothan–Hatree–Fock (RHF) wave function to describe the helium atom as a target. The initial six-dimensional integral of the transition amplitude is reduced to a one-dimensional integral through analytical calculations. The performance of the current three-body method, which neglects dynamic electronic correlation, is evaluated by comparing its results with the four-body methods and corresponding experimental data. Comparisons show reasonable agreement in the total cross sections and the small scattering angles of the differential cross sections.
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 Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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.