Electronic stopping cross sections of tungsten to swift ions and comparisons with models
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Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
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Accurate stopping power data for tungsten is crucial for ion beam analysis (IBA) techniques applied to fusion-related materials. In this work, we present new experimental measurements of the stopping power of tungsten for protons and alpha particles, addressing key gaps in fundamental databases. Our results provide a densely spaced dataset, refining the practical uncertainty limits to approximately 1.8% for protons and 2.0% for alpha particles. We critically compare our findings with semi-empirical and theoretical models, evaluating their performance in describing the stopping power of tungsten for light projectiles. By improving the accuracy and reliability of stopping power data, we contribute to the enhancement of the applicability of ion-beam methods for characterizing tungsten in fusion-related research. These findings contribute to the refinement of semi-empirical models and support the ongoing efforts to develop more precise theoretical frameworks for ion-solid interactions in high-Z materials.
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SILVA, TIAGO F.; SILVA, ARILSON; RODRIGUES, CLEBER L.; ADDED, NEMITALA; TABACNIKS, MANFREDO H.; MATIAS, FLAVIO; YORIYAZ, HELIO; SHORTO, JULIAN M.B. Electronic stopping cross sections of tungsten to swift ions and comparisons with models. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, v. 569, p. 1-8, 2025. DOI: 10.1016/j.nimb.2025.165891. Disponível em: https://repositorio.ipen.br/handle/123456789/49508. Acesso em: 20 Mar 2026.
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