NEXAFS spectroscopy of CVD diamond films exposed to fusion, relevant hydrogen plasma

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dc.contributor.authorGuenette, MCen_AU
dc.contributor.authorDeslandes, Aen_AU
dc.contributor.authorSamuell, CMen_AU
dc.contributor.authorTadich, Aen_AU
dc.contributor.authorThomsen, Len_AU
dc.contributor.authorCowie, BCCen_AU
dc.contributor.authorCorr, CSen_AU
dc.contributor.authorRiley, DPen_AU
dc.date.accessioned2015-09-30T01:36:39Zen_AU
dc.date.available2015-09-30T01:36:39Zen_AU
dc.date.issued2013-04-01en_AU
dc.date.statistics2015-10-24en_AU
dc.description.abstractA series of CVD diamond films have been exposed to hydrogen plasma in the linear magnetized plasma device, MAGPIE, with various applied sample stage biases between 0 V (no applied bias) to − 500 V. The plasma-induced damage to the surface structure of the diamond films has been investigated by Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy in both the Auger electron yield (AEY) and total fluorescence yield (TFY) modes. The key diamond NEXAFS spectral features (diamond core exciton and second absolute band gap) are found to be diminished following plasma exposure as measured in the surface sensitive, AEY spectra, whilst these features remain unchanged relative to an unexposed diamond reference film as measured using the bulk sensitive, TFY spectra. These results, in conjunction with SRIM simulations, show definitively that the damage to the surface of the diamond films is restricted to the scale of the penetration depth of the H ions and no damage is induced at greater depths. The power and sensitivity of NEXAFS spectroscopy in assessing damage to the surface of diamond from fusion-relevant plasma-surface interactions are demonstrated. © 2013, Elsevier B.V.en_AU
dc.identifier.citationGuenette, M. C., Deslandes, A., Samuell, C. M., Tadich, A., Thomsen, L., Cowie, B. C. C., Corr, C. S., & Riley, D. P. (2013). NEXAFS spectroscopy of CVD diamond films exposed to fusion, relevant hydrogen plasma. Diamond and Related Materials, 34, 45-49. doi:10.1016/j.diamond.2013.02.003en_AU
dc.identifier.govdoc6112en_AU
dc.identifier.issn0925-9635en_AU
dc.identifier.journaltitleDiamond and Related Materialsen_AU
dc.identifier.pagination45-49en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.diamond.2013.02.003en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6273en_AU
dc.identifier.volume34en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPlasmaen_AU
dc.subjectDiamondsen_AU
dc.subjectFilmsen_AU
dc.subjectHydrogenen_AU
dc.subjectThermonuclear reactionsen_AU
dc.subjectX-ray spectroscopyen_AU
dc.subjectAuger electron spectroscopyen_AU
dc.subjectFluorescence spectroscopyen_AU
dc.titleNEXAFS spectroscopy of CVD diamond films exposed to fusion, relevant hydrogen plasmaen_AU
dc.typeJournal Articleen_AU
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