Electronic cross section, stopping power and energy-loss straggling of metals for swift protons, alpha particles and electrons
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Título: | Electronic cross section, stopping power and energy-loss straggling of metals for swift protons, alpha particles and electrons |
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Autor/es: | Vera Gomis, Pablo de | Abril, Isabel | García Molina, Rafael |
Grupo/s de investigación o GITE: | Interacción de Partículas Cargadas con la Materia |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | Ion beams | Electron beams | Stopping power | Energy-loss straggling | Electronic cross section | Metals | Dielectric formalism | Energy-loss function |
Fecha de publicación: | 6-dic-2023 |
Editor: | Frontiers Media |
Cita bibliográfica: | de Vera P, Abril I and Garcia-Molina R (2023) Electronic cross section, stopping power and energy-loss straggling of metals for swift protons, alpha particles and electrons. Front. Mater. 10:1249517. doi: 10.3389/fmats.2023.1249517 |
Resumen: | Understanding and quantifying the electronic inelastic interactions of swift ions and electrons in metals is fundamental for many applications of charged particle beams. A common theoretical approach is moreover desirable for the case of both types of projectiles, as large numbers of secondary electrons arise as the result of ion interaction with metals. The electronic cross section, stopping power and energy-loss straggling resulting from the interaction of swift protons, alpha particles and electrons when moving through the metals aluminum, iron, copper, molybdenum, platinum and gold, are calculated theoretically for a wide energy range of the projectiles. The model is based on the dielectric formalism, which realistically accounts for the excitation spectrum of each metal through the Mermin Energy-Loss Function–Generalized Oscillator Strength (MELF-GOS) methodology. The impact of the complexity of the excitation spectrum of each metal (encompassing interband transitions and collective excitations), as well as the different sources of (sometimes conflicting) optical data is analysed in detail. Specific interactions are considered for each projectile, such as electron capture/loss and electron cloud polarisation for ions, and indistinguishability, exchange and low-energy corrections for electrons. An estimate of possible contributions of surface excitations to the interaction probabilities of low energy electrons is given. Comparison of our results with a large collection of available experimental data shows good agreement. As a practical and useful outcome of the work, we provide analytical expressions fitting all our calculated quantities, which can be applied for simulation or comparison purposes. |
Patrocinador/es: | This work is part of the R&D project no. PID2021-122866NB-I00 funded by the Spanish Ministerio de Ciencia e Innovación (MCIN/AEI/10.13039/501100011033/) and by the European Regional Development Fund (“ERDF A way to make Europe”), as well as of the R&D project no. 22081/PI/22 funded by the Autonomous Community of the Region of Murcia through the call “Projects for the development of scientific and technical research by competitive groups”, included in the Regional Program for the Promotion of Scientific and Technical Research (Action Plan 2022) of the Fundación Séneca—Agencia de Ciencia y Tecnología de la Región de Murcia. |
URI: | http://hdl.handle.net/10045/139047 |
ISSN: | 2296-8016 |
DOI: | 10.3389/fmats.2023.1249517 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 de Vera, Abril and Garcia-Molina. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3389/fmats.2023.1249517 |
Aparece en las colecciones: | INV - IPCM - Artículos de Revistas |
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