https://doi.org/10.1140/epjp/s13360-025-06432-8
Regular Article
Stopping coefficients of H, He and Li slow ions: a density functional theory approach
1
Departamento de Física, Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana (UTEM), Avenida José Pedro Alessandri 1242, 7800002, Santiago, Chile
2
Laboratorio de Investigaciones Aplicadas con Tecnologías Atómicas y Nucleares (LIATAN), Facultad de Ciencias Naturales, Matemática y del Medio Ambiente, Universidad Tecnológica Metropolitana (UTEM), Las Palmeras 3360, 7800002, Santiago, Chile
Received:
18
December
2024
Accepted:
13
May
2025
Published online:
4
June
2025
In this work, we determine theoretical stopping coefficients for H, He and Li slow ions. Using a density functional theory framework, we found as a function of the electronic density of different solid targets the scattering phase shifts 
and the corresponding stopping coefficients of slow light ions. The phase shifts as a function of the electron speed 
are determined and using this values at the Fermi velocity, we calculate the transport cross section and the stopping coefficients Q. As a whole, our results are in relative good agreement with the experimental data. To obtain more satisfactory results, it was necessary to modify our calculations to take into account the local electron density of the target. In the case of the hydrogen ion, the values obtained, with both approximations together, are in agreement with a large number of the available experimental results. We found that the calculations performed for the helium ion show a noticeable discontinuity and also that when we take into account the total local electronic density of the target to account for the experimental data. In the case of lithium ion, the calculation is in good agreement with the experimental data for the case of Si, Zn and Ag when we take into account the total local electronic density of the target and also we find that for Li ion further experimental measurements are necessary in this energy range.
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.
