|Title||Performances of Rh and Mo mirrors under JET exposure|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||L. Marot, E. Meyer, M. Rubel, D. Ivanova, A. Widdowson, J.P Coad, J. Likonen, A. Hakola, S. Koivuranta, G. De Temmerman|
|Journal||Journal of Nuclear Materials|
|Pagination||S1187 - S1191|
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.
|Alternate Title||J. Nucl. Mater.|
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