Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals

We present a theoretically-motivated model of helium bubble density as a function of volume for high-pressure helium bubbles in plasma-facing tungsten. The model is a good match to the empirical correlation we published previously [Hammond et al., Acta Mater. 144, 561–578 (2018)] for small bubbles,...

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Autores principales: Hammond, Karl D., Maroudas, Dimitrios, Wirth, Brian D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7010674/
https://www.ncbi.nlm.nih.gov/pubmed/32041995
http://dx.doi.org/10.1038/s41598-020-58581-8
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author Hammond, Karl D.
Maroudas, Dimitrios
Wirth, Brian D.
author_facet Hammond, Karl D.
Maroudas, Dimitrios
Wirth, Brian D.
author_sort Hammond, Karl D.
collection PubMed
description We present a theoretically-motivated model of helium bubble density as a function of volume for high-pressure helium bubbles in plasma-facing tungsten. The model is a good match to the empirical correlation we published previously [Hammond et al., Acta Mater. 144, 561–578 (2018)] for small bubbles, but the current model uses no adjustable parameters. The model is likely applicable to significantly larger bubbles than the ones examined here, and its assumptions can be extended trivially to other metals and gases. We expect the model to be broadly applicable and useful in coarse-grained models of gas transport in metals.
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spelling pubmed-70106742020-02-21 Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals Hammond, Karl D. Maroudas, Dimitrios Wirth, Brian D. Sci Rep Article We present a theoretically-motivated model of helium bubble density as a function of volume for high-pressure helium bubbles in plasma-facing tungsten. The model is a good match to the empirical correlation we published previously [Hammond et al., Acta Mater. 144, 561–578 (2018)] for small bubbles, but the current model uses no adjustable parameters. The model is likely applicable to significantly larger bubbles than the ones examined here, and its assumptions can be extended trivially to other metals and gases. We expect the model to be broadly applicable and useful in coarse-grained models of gas transport in metals. Nature Publishing Group UK 2020-02-10 /pmc/articles/PMC7010674/ /pubmed/32041995 http://dx.doi.org/10.1038/s41598-020-58581-8 Text en © The Author(s) 2020 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Hammond, Karl D.
Maroudas, Dimitrios
Wirth, Brian D.
Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title_full Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title_fullStr Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title_full_unstemmed Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title_short Theoretical Model of Helium Bubble Growth and Density in Plasma-Facing Metals
title_sort theoretical model of helium bubble growth and density in plasma-facing metals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7010674/
https://www.ncbi.nlm.nih.gov/pubmed/32041995
http://dx.doi.org/10.1038/s41598-020-58581-8
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