Diamond structure recovery during ion irradiation at elevated temperatures

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dc.contributor.authorDeslandes, Aen_AU
dc.contributor.authorGuenette, MCen_AU
dc.contributor.authorBelay, Ken_AU
dc.contributor.authorElliman, RGen_AU
dc.contributor.authorKaratchevtseva, Ien_AU
dc.contributor.authorThomsen, Len_AU
dc.contributor.authorRiley, DPen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.date.accessioned2019-09-03T02:22:09Zen_AU
dc.date.available2019-09-03T02:22:09Zen_AU
dc.date.issued2015-12-15en_AU
dc.description.abstractCVD diamond is irradiated by 5 MeV carbon ions, with each sample held at a different temperature (300–873 K) during irradiations. The defect structures resulting from the irradiations are evident as vacancy, interstitial and amorphous carbon signals in Raman spectra. The observed variation of the full width at half maximum (FWHM) and peak position of the diamond peak suggests that disorder in the diamond lattice is reduced for high temperature irradiations. The dumbbell interstitial signal is reduced for irradiations at 873 K, which suggests this defect is unstable at these temperatures and that interstitials have migrated to crystal surfaces. Near edge X-ray absorption fine structure (NEXAFS) spectroscopy results indicate that damage to the diamond structure at the surface has occurred for room temperature irradiations, however, this structure is at least partially recovered for irradiations performed at 473 K and above. The results suggest that, in a high temperature irradiation environment such as a nuclear fusion device, in situ annealing of radiation-created defects can maintain the diamond structure and prolong the lifetime of diamond components. © 2015 Elsevier B.V.en_AU
dc.identifier.citationDeslandes, A., Guenette, M. C., Belay, K., Elliman, R. G., Karatchevtseva, I., Thomsen, L., Riley, D. P., & Lumpkin, G. R. (2015). Diamond structure recovery during ion irradiation at elevated temperatures. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 365, 331-335. doi: 10.1016/j.nimb.2015.07.058.en_AU
dc.identifier.govdoc9066en_AU
dc.identifier.issn0168-583Xen_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atomsen_AU
dc.identifier.pagination331-335en_AU
dc.identifier.urihttps://doi.org/10.1016/j.nimb.2015.07.058en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9057en_AU
dc.identifier.volume365en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCarbon ionsen_AU
dc.subjectDiamondsen_AU
dc.subjectRaman spectroscopyen_AU
dc.subjectIrradiationen_AU
dc.subjectX-ray spectroscopyen_AU
dc.subjectRadiation detectorsen_AU
dc.subjectTritium compoundsen_AU
dc.titleDiamond structure recovery during ion irradiation at elevated temperaturesen_AU
dc.typeJournal Articleen_AU
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