Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials
Knowledge of mechanical and physical property evolution due to irradiation damage is essential for the development of future fission and fusion reactors. Ion-irradiation provides an excellent proxy for studying irradiation damage, allowing high damage doses without sample activation. Limited ion-pen...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2016
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| Online Access: | http://hdl.handle.net/1721.1/100815 https://orcid.org/0000-0001-7804-5418 |
| _version_ | 1826217723146797056 |
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| author | Hofmann, F. Mason, D. R. Dudarev, S. L. Eliason, Jeffrey K. Maznev, Alexei Nelson, Keith Adam |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Hofmann, F. Mason, D. R. Dudarev, S. L. Eliason, Jeffrey K. Maznev, Alexei Nelson, Keith Adam |
| author_sort | Hofmann, F. |
| collection | MIT |
| description | Knowledge of mechanical and physical property evolution due to irradiation damage is essential for the development of future fission and fusion reactors. Ion-irradiation provides an excellent proxy for studying irradiation damage, allowing high damage doses without sample activation. Limited ion-penetration-depth means that only few-micron-thick damaged layers are produced. Substantial effort has been devoted to probing the mechanical properties of these thin implanted layers. Yet, whilst key to reactor design, their thermal transport properties remain largely unexplored due to a lack of suitable measurement techniques. Here we demonstrate non-contact thermal diffusivity measurements in ion-implanted tungsten for nuclear fusion armour. Alloying with transmutation elements and the interaction of retained gas with implantation-induced defects both lead to dramatic reductions in thermal diffusivity. These changes are well captured by our modelling approaches. Our observations have important implications for the design of future fusion power plants. |
| first_indexed | 2024-09-23T17:08:09Z |
| format | Article |
| id | mit-1721.1/100815 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:08:09Z |
| publishDate | 2016 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1008152022-10-03T10:41:31Z Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials Hofmann, F. Mason, D. R. Dudarev, S. L. Eliason, Jeffrey K. Maznev, Alexei Nelson, Keith Adam Massachusetts Institute of Technology. Department of Chemistry Eliason, Jeffrey K. Maznev, Alexei Nelson, Keith Adam Knowledge of mechanical and physical property evolution due to irradiation damage is essential for the development of future fission and fusion reactors. Ion-irradiation provides an excellent proxy for studying irradiation damage, allowing high damage doses without sample activation. Limited ion-penetration-depth means that only few-micron-thick damaged layers are produced. Substantial effort has been devoted to probing the mechanical properties of these thin implanted layers. Yet, whilst key to reactor design, their thermal transport properties remain largely unexplored due to a lack of suitable measurement techniques. Here we demonstrate non-contact thermal diffusivity measurements in ion-implanted tungsten for nuclear fusion armour. Alloying with transmutation elements and the interaction of retained gas with implantation-induced defects both lead to dramatic reductions in thermal diffusivity. These changes are well captured by our modelling approaches. Our observations have important implications for the design of future fusion power plants. Engineering and Physical Sciences Research Council (Programme Grant EP/G050031) Engineering and Physical Sciences Research Council (Programme Grant EP/H018921/1) 2016-01-13T18:29:47Z 2016-01-13T18:29:47Z 2015-11 2015-06 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/100815 Hofmann, F., D. R. Mason, J. K. Eliason, A. A. Maznev, K. A. Nelson, and S. L. Dudarev. “Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials.” Scientific Reports 5 (November 3, 2015): 16042. https://orcid.org/0000-0001-7804-5418 en_US http://dx.doi.org/10.1038/srep16042 Scientific Reports Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature Publishing Group |
| spellingShingle | Hofmann, F. Mason, D. R. Dudarev, S. L. Eliason, Jeffrey K. Maznev, Alexei Nelson, Keith Adam Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title | Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title_full | Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title_fullStr | Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title_full_unstemmed | Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title_short | Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials |
| title_sort | non contact measurement of thermal diffusivity in ion implanted nuclear materials |
| url | http://hdl.handle.net/1721.1/100815 https://orcid.org/0000-0001-7804-5418 |
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