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Cited by 105Fusion materials and technologiesNuclear Materials and PropertiesThermal properties of materials

Non-Contact Measurement of Thermal Diffusivity in Ion-Implanted Nuclear Materials

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Hofmann, F., Mason, D. R., Eliason, J. K., Maznev, A. A., Nelson, K. A., Dudarev, S. L.·2015·Scientific Reports
DOI 10.1038/srep16042PMC PMC4630606
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Abstract

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.

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Authors
Hofmann, F., Mason, D. R., Eliason, J. K., Maznev, A. A., Nelson, K. A., & Dudarev, S. L.
Affiliations
  • University of Oxford (GB)
  • Culham Centre for Fusion Energy (GB)
  • Massachusetts Institute of Technology (US)
Corresponding author
Hofmann, F.
ORCID
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2015-11-03
Volume
5
Issue
1
Pages
16042-16042
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/srep16042
PMC
PMC4630606
OpenAlex
W1905950950
Cited by
105
References
44
Citations by year
2026: 5 · 2025: 9 · 2024: 12 · 2023: 12 · 2022: 8 · 2021: 11 · 2020: 12 · 2019: 10 · 2018: 10 · 2017: 11 · 2016: 5
FWCI
3.52
Type
journal article
Language
en
Open access
Licence
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-sa)
  • arXiv (Cornell University)
Funders
  • U.S. Department of Energy (EP/H018921/1, DE‐FG02‐, 2014-2018, 633053, DESC0001299, #DE-FG02-09ER46577)
  • EUROfusion (training programme 2014-2018, 633053)
  • Royal Society (RG130308)
  • European Commission (633053)
  • Solid-State Solar Thermal Energy Conversion, Massachusetts Institute of Technology (DE‐SC0001299, DE-SC0001299/DE-FG02-09ER46577, DE-FG02-09ER46577)
  • Euratom Research and Training Programme (2014-2018, 633053)
  • Engineering and Physical Sciences Research Council (EP/H018921/, EP/H018921/1, 633053, EP/G050031)
  • Basic Energy Sciences (DE-SC0001299/DE-FG02-09ER46577, SC0001299/DE-FG02-09ER46577, DE‐SC0001299, DE-FG02, DE-FG02- 09ER46577)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Fusion materials and technologies
  • Physical Sciences › Materials Science › Materials Chemistry › Nuclear Materials and Properties
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
Keywords
thermal diffusivity, ion implantation, tungsten, radiation damage, non-contact measurement, implantation-induced defects, heat transport, mechanical properties

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