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Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils
At temperatures below the onset of vacancy migration, metals exposed to energetic ions develop dynamically fluctuating steady-state microstructures. Statistical properties of these microstructures in the asymptotic high exposure limit are not universal and vary depending on the energy and mass of th...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9886950/ https://www.ncbi.nlm.nih.gov/pubmed/36717656 http://dx.doi.org/10.1038/s41598-022-27087-w |
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author | Boleininger, Max Mason, Daniel R. Sand, Andrea E. Dudarev, Sergei L. |
author_facet | Boleininger, Max Mason, Daniel R. Sand, Andrea E. Dudarev, Sergei L. |
author_sort | Boleininger, Max |
collection | PubMed |
description | At temperatures below the onset of vacancy migration, metals exposed to energetic ions develop dynamically fluctuating steady-state microstructures. Statistical properties of these microstructures in the asymptotic high exposure limit are not universal and vary depending on the energy and mass of the incident ions. We develop a model for the microstructure of an ion-irradiated metal under athermal conditions, where internal stress fluctuations dominate the kinetics of structural evolution. The balance between defect production and recombination depends sensitively not only on the total exposure to irradiation, defined by the fluence, but also on the energy of the incident particles. The model predicts the defect content in the high dose limit as an integral of the spectrum of primary knock-on atom energies, with the finding that low energy ions produce a significantly higher amount of damage than high energy ions at comparable levels of exposure to radiation. |
format | Online Article Text |
id | pubmed-9886950 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-98869502023-02-01 Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils Boleininger, Max Mason, Daniel R. Sand, Andrea E. Dudarev, Sergei L. Sci Rep Article At temperatures below the onset of vacancy migration, metals exposed to energetic ions develop dynamically fluctuating steady-state microstructures. Statistical properties of these microstructures in the asymptotic high exposure limit are not universal and vary depending on the energy and mass of the incident ions. We develop a model for the microstructure of an ion-irradiated metal under athermal conditions, where internal stress fluctuations dominate the kinetics of structural evolution. The balance between defect production and recombination depends sensitively not only on the total exposure to irradiation, defined by the fluence, but also on the energy of the incident particles. The model predicts the defect content in the high dose limit as an integral of the spectrum of primary knock-on atom energies, with the finding that low energy ions produce a significantly higher amount of damage than high energy ions at comparable levels of exposure to radiation. Nature Publishing Group UK 2023-01-30 /pmc/articles/PMC9886950/ /pubmed/36717656 http://dx.doi.org/10.1038/s41598-022-27087-w Text en © Crown 2023, corrected publication 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Boleininger, Max Mason, Daniel R. Sand, Andrea E. Dudarev, Sergei L. Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title | Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title_full | Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title_fullStr | Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title_full_unstemmed | Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title_short | Microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
title_sort | microstructure of a heavily irradiated metal exposed to a spectrum of atomic recoils |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9886950/ https://www.ncbi.nlm.nih.gov/pubmed/36717656 http://dx.doi.org/10.1038/s41598-022-27087-w |
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