Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 470, Issue -, Pages 268-277Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2015.12.021
Keywords
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Funding
- EPSRC and Radioactive Waste Management [EP/1036354/1]
- Engineering and Physical Sciences Research Council [EP/I036354/1] Funding Source: researchfish
- EPSRC [EP/I036354/1] Funding Source: UKRI
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The present work has used microwave plasma chemical vapour deposition to generate suitable isotopically labelled carbonaceous deposits on the surface of Pile Grade A graphite for use as surrogates for studying the behaviour of the deposits observed on irradiated graphite extracted from UK Magnox reactors. These deposits have been shown elsewhere to contain an enhanced concentration of C-14 compared to the bulk graphite. A combination of Raman spectroscopy, ion beam milling with scanning electron microscopy and secondary ion mass spectrometry were used to determine topography and internal morphology in the formed deposits. Direct comparison was made against deposits found on irradiated graphite samples trepanned from a Magnox reactor core and showed a good similarity in appearance. This work suggests that the microwave plasma chemical vapour deposition technique is of value in producing simulant carbon deposits, being of sufficiently representative morphology for use in non-radioactive surrogate studies of post-disposal behaviour of C-14-containing deposits on some irradiated Magnox reactor graphite. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
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