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Performances of Rh and Mo mirrors under JET exposure
- Marot, Laurent (author)
- Meyer, E. (author)
-
- Rubel, Marek (author)
- KTH,Fusionsplasmafysik,Alfvénlaboratoriet
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- Ivanova, D. (author)
- Widdowson, A. (author)
- Coad, J. P. (author)
- Likonen, J. (author)
- Hakola, A. (author)
- Koivuranta, S. (author)
- De Temmerman, G. (author)
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- (creator_code:org_t)
- Elsevier BV, 2013
- 2013
- English.
- In: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 438, s. S1187-S1191
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The aim of this work was to provide a comprehensive surface characterization of rhodium and molybdenum mirrors exposed on the main chamber wall of JET during campaigns with carbon plasma-facing components. As determined using X-ray photoelectron spectroscopy, Secondary Ion Mass Spectrometry, Scanning Electron Microscopy and optical measurements the co-deposits formed on the mirrors were composed of C, Be, Ni, Mo and Fe. Most of the metallic elements on the surface were in the oxidized states. After removing a part of the film by sputtering with Ar+ ions, Mo carbide state was studied by XPS. The reflectivity measurements showed the dependence of the thickness of the deposited film on the optical properties of the mirror: a thinner film on the Mo mirrors results in an identical reduction in reflectivity as that seen on the exposed Rh mirror.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Chamber walls
- Deposited films
- Metallic elements
- Optical measurement
- Oxidized state
- Plasma-facing components
- Reflectivity measurements
- Surface characterization
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Marot, Laurent
- Meyer, E.
- Rubel, Marek
- Ivanova, D.
- Widdowson, A.
- Coad, J. P.
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- Likonen, J.
- Hakola, A.
- Koivuranta, S.
- De Temmerman, G.
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- NATURAL SCIENCES
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- Royal Institute of Technology
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