Performances of Rh and Mo mirrors under JET exposure

L. Marot (Corresponding Author), E. Meyer, M. Rubel, D. Ivanova, A. Widdowson, J.P. Coad, Jari Likonen, Antti Hakola, Seppo Koivuranta, G. De Temmerman, JET-EFDA collaborators

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    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.
    Original languageEnglish
    Pages (from-to)S1187-S1191
    Number of pages5
    JournalJournal of Nuclear Materials
    Volume438
    Issue numberSupplement
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    Event20th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Aachen, Aachen, Germany
    Duration: 21 May 201225 May 2012

    Fingerprint

    Mirrors
    X ray photoelectron spectroscopy
    mirrors
    Facings
    Rhodium
    Molybdenum
    Secondary ion mass spectrometry
    Sputtering
    Carbides
    Carbon
    Deposits
    Optical properties
    Ions
    Plasmas
    Thin films
    Scanning electron microscopy
    reflectance
    rhodium
    optical measurement
    carbides

    Cite this

    Marot, L., Meyer, E., Rubel, M., Ivanova, D., Widdowson, A., Coad, J. P., ... JET-EFDA collaborators (2013). Performances of Rh and Mo mirrors under JET exposure. Journal of Nuclear Materials, 438(Supplement), S1187-S1191. https://doi.org/10.1016/j.jnucmat.2013.01.262
    Marot, L. ; Meyer, E. ; Rubel, M. ; Ivanova, D. ; Widdowson, A. ; Coad, J.P. ; Likonen, Jari ; Hakola, Antti ; Koivuranta, Seppo ; De Temmerman, G. ; JET-EFDA collaborators. / Performances of Rh and Mo mirrors under JET exposure. In: Journal of Nuclear Materials. 2013 ; Vol. 438, No. Supplement. pp. S1187-S1191.
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    title = "Performances of Rh and Mo mirrors under JET exposure",
    abstract = "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.",
    author = "L. Marot and E. Meyer and M. Rubel and D. Ivanova and A. Widdowson and J.P. Coad and Jari Likonen and Antti Hakola and Seppo Koivuranta and {De Temmerman}, G. and {JET-EFDA collaborators}",
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    language = "English",
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    Marot, L, Meyer, E, Rubel, M, Ivanova, D, Widdowson, A, Coad, JP, Likonen, J, Hakola, A, Koivuranta, S, De Temmerman, G & JET-EFDA collaborators 2013, 'Performances of Rh and Mo mirrors under JET exposure', Journal of Nuclear Materials, vol. 438, no. Supplement, pp. S1187-S1191. https://doi.org/10.1016/j.jnucmat.2013.01.262

    Performances of Rh and Mo mirrors under JET exposure. / Marot, L. (Corresponding Author); Meyer, E.; Rubel, M.; Ivanova, D.; Widdowson, A.; Coad, J.P.; Likonen, Jari; Hakola, Antti; Koivuranta, Seppo; De Temmerman, G.; JET-EFDA collaborators.

    In: Journal of Nuclear Materials, Vol. 438, No. Supplement, 2013, p. S1187-S1191.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Performances of Rh and Mo mirrors under JET exposure

    AU - Marot, L.

    AU - Meyer, E.

    AU - Rubel, M.

    AU - Ivanova, D.

    AU - Widdowson, A.

    AU - Coad, J.P.

    AU - Likonen, Jari

    AU - Hakola, Antti

    AU - Koivuranta, Seppo

    AU - De Temmerman, G.

    AU - JET-EFDA collaborators

    PY - 2013

    Y1 - 2013

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    AB - 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.

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    Marot L, Meyer E, Rubel M, Ivanova D, Widdowson A, Coad JP et al. Performances of Rh and Mo mirrors under JET exposure. Journal of Nuclear Materials. 2013;438(Supplement):S1187-S1191. https://doi.org/10.1016/j.jnucmat.2013.01.262