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

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep16042· OSTI ID:1242042
 [1];  [2];  [3];  [3];  [3];  [2]
  1. Univ. of Oxford (United Kingdom)
  2. CCFE, Abingdon (United Kingdom)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

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.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001299
OSTI ID:
1242042
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 74 works
Citation information provided by
Web of Science

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Cited By (12)

Recent advances in characterising irradiation damage in tungsten for fusion power journal November 2019
Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten journal December 2019
Thermal diffusivity determination using heterodyne phase insensitive transient grating spectroscopy journal June 2018
Orientation-dependent indentation response of helium-implanted tungsten journal June 2019
Thermal transport across nanoscale damage profile in sapphire irradiated by swift heavy ions journal January 2020
Anomalous thermal diffusivity in underdoped YBa 2 Cu 3 O 6+x journal May 2017
An empirical potential for simulating vacancy clusters in tungsten journal November 2017
The influence of plasma-surface interaction on the performance of tungsten at the ITER divertor vertical targets journal March 2018
Electronic heat transport versus atomic heating in irradiated short metallic nanowires journal October 2019
Impact of irradiation induced dislocation loops on thermal conductivity in ceramics journal June 2019
Hardening and Strain Localisation in Helium-Ion-Implanted Tungsten journal January 2019
Anomalous Thermal Diffusivity in Underdoped YBa$_2$Cu$_3$O$_{6+x}$ text January 2016

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