https://doi.org/10.1140/epjd/s10053-025-01017-7
Regular Article - Atomic and Molecular Collisions
Projectile charge effects in ionization of water molecule by positron and electron impact
1
LPQSD, Department of Physics, Faculty of Sciences, University Sétif 1, 19000, Sétif, Algeria
2
LPCT, UMR CNRS 7019, University of Lorraine, BP 7019, 57078, Metz, Cedex 3, France
Received:
12
March
2025
Accepted:
30
May
2025
Published online:
21
June
2025
We present a theoretical investigation to study the ionization reaction of the water molecule in its ground state by positron and electron impact, from low to intermediate impact energies. The triple differential cross section (TDCS) is calculated using the M3CWZ model, where each particle in the continuum is represented by a Coulomb wave with a variable charge Z(r), and the post collision interaction (PCI) is included and exactly treated. Numerical results are compared with available data and other theories in a wide range of kinematics. It is found that M3CWZ results reproduce quite well the data at intermediate and low impact energies for electron impact process. For positron impact, our results are in good agreement with theoretical predictions and show interesting trends that should be confirmed by future experiments.
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© The Author(s), under exclusive licence to EDP Sciences, SIF 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.
