Performances of Rh and Mo mirrors under JET exposure
2013 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 438, S1187-S1191 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2013. Vol. 438, S1187-S1191 p.
Chamber walls, Deposited films, Metallic elements, Optical measurement, Oxidized state, Plasma-facing components, Reflectivity measurements, Surface characterization
IdentifiersURN: urn:nbn:se:kth:diva-142574DOI: 10.1016/j.jnucmat.2013.01.262ISI: 000330795300260ScopusID: 2-s2.0-84885472105OAI: oai:DiVA.org:kth-142574DiVA: diva2:703890
20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), May 21-25, 2012, Aachen, Germany
QC 201403102014-03-102014-03-072014-03-10Bibliographically approved