Investigation on the erosion/deposition processes in the ITER-like wall divertor at JET using glow discharge optical emission spectrometry technique

C. Ruset, E. Grigore, C. Luculescu, I. Tiseanu, J. Likonen, M. Mayer, M. Rubel, G.F. Matthews

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    As a complementary method to Rutherford back scattering (RBS), glow discharge optical emission spectrometry (GDOES) was used to investigate the depth profiles of W, Mo, Be, O and C concentrations into marker coatings (CFC/Mo/W/Mo/W) and the substrate of divertor tiles up to a depth of about 100 μm. A number of 10 samples cored from particular areas of the divertor tiles were analyzed. The results presented in this paper are valid only for those areas and they cannot be extrapolated to the entire tile. Significant deposition of Be was measured on Tile 3 (near to the top), Tile 6 (at about 40 mm from the innermost edge) and especially on Tile 0 (HFGC). Preliminary experiments seem to indicate a penetration of Be through the pores and imperfections of CFC material up to a depth of 100 μm in some cases. No erosion and a thin layer of Be (<1 μm) was detected on Tiles 4, 7 and 8. On Tile 1 no erosion was found at about 1/3 from bottom.
    Original languageEnglish
    Article number014049
    JournalPhysica Scripta
    Volume2016
    Issue numberT167
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    tiles
    Erosion
    Tile
    glow discharges
    erosion
    light emission
    spectroscopy
    chlorofluorocarbons
    Backscattering
    Imperfections
    Thin Layer
    Penetration
    markers
    Coating
    penetration
    Substrate
    Entire
    Valid
    porosity
    coatings

    Keywords

    • tungsten coatings
    • glow discharge optical emision spectrometry
    • ITER-like wall

    Cite this

    Ruset, C. ; Grigore, E. ; Luculescu, C. ; Tiseanu, I. ; Likonen, J. ; Mayer, M. ; Rubel, M. ; Matthews, G.F. / Investigation on the erosion/deposition processes in the ITER-like wall divertor at JET using glow discharge optical emission spectrometry technique. In: Physica Scripta. 2016 ; Vol. 2016, No. T167.
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    abstract = "As a complementary method to Rutherford back scattering (RBS), glow discharge optical emission spectrometry (GDOES) was used to investigate the depth profiles of W, Mo, Be, O and C concentrations into marker coatings (CFC/Mo/W/Mo/W) and the substrate of divertor tiles up to a depth of about 100 μm. A number of 10 samples cored from particular areas of the divertor tiles were analyzed. The results presented in this paper are valid only for those areas and they cannot be extrapolated to the entire tile. Significant deposition of Be was measured on Tile 3 (near to the top), Tile 6 (at about 40 mm from the innermost edge) and especially on Tile 0 (HFGC). Preliminary experiments seem to indicate a penetration of Be through the pores and imperfections of CFC material up to a depth of 100 μm in some cases. No erosion and a thin layer of Be (<1 μm) was detected on Tiles 4, 7 and 8. On Tile 1 no erosion was found at about 1/3 from bottom.",
    keywords = "tungsten coatings, glow discharge optical emision spectrometry, ITER-like wall",
    author = "C. Ruset and E. Grigore and C. Luculescu and I. Tiseanu and J. Likonen and M. Mayer and M. Rubel and G.F. Matthews",
    year = "2016",
    doi = "10.1088/0031-8949/T167/1/014049",
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    Investigation on the erosion/deposition processes in the ITER-like wall divertor at JET using glow discharge optical emission spectrometry technique. / Ruset, C.; Grigore, E.; Luculescu, C.; Tiseanu, I.; Likonen, J.; Mayer, M.; Rubel, M.; Matthews, G.F.

    In: Physica Scripta, Vol. 2016, No. T167, 014049, 2016.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Investigation on the erosion/deposition processes in the ITER-like wall divertor at JET using glow discharge optical emission spectrometry technique

    AU - Ruset, C.

    AU - Grigore, E.

    AU - Luculescu, C.

    AU - Tiseanu, I.

    AU - Likonen, J.

    AU - Mayer, M.

    AU - Rubel, M.

    AU - Matthews, G.F.

    PY - 2016

    Y1 - 2016

    N2 - As a complementary method to Rutherford back scattering (RBS), glow discharge optical emission spectrometry (GDOES) was used to investigate the depth profiles of W, Mo, Be, O and C concentrations into marker coatings (CFC/Mo/W/Mo/W) and the substrate of divertor tiles up to a depth of about 100 μm. A number of 10 samples cored from particular areas of the divertor tiles were analyzed. The results presented in this paper are valid only for those areas and they cannot be extrapolated to the entire tile. Significant deposition of Be was measured on Tile 3 (near to the top), Tile 6 (at about 40 mm from the innermost edge) and especially on Tile 0 (HFGC). Preliminary experiments seem to indicate a penetration of Be through the pores and imperfections of CFC material up to a depth of 100 μm in some cases. No erosion and a thin layer of Be (<1 μm) was detected on Tiles 4, 7 and 8. On Tile 1 no erosion was found at about 1/3 from bottom.

    AB - As a complementary method to Rutherford back scattering (RBS), glow discharge optical emission spectrometry (GDOES) was used to investigate the depth profiles of W, Mo, Be, O and C concentrations into marker coatings (CFC/Mo/W/Mo/W) and the substrate of divertor tiles up to a depth of about 100 μm. A number of 10 samples cored from particular areas of the divertor tiles were analyzed. The results presented in this paper are valid only for those areas and they cannot be extrapolated to the entire tile. Significant deposition of Be was measured on Tile 3 (near to the top), Tile 6 (at about 40 mm from the innermost edge) and especially on Tile 0 (HFGC). Preliminary experiments seem to indicate a penetration of Be through the pores and imperfections of CFC material up to a depth of 100 μm in some cases. No erosion and a thin layer of Be (<1 μm) was detected on Tiles 4, 7 and 8. On Tile 1 no erosion was found at about 1/3 from bottom.

    KW - tungsten coatings

    KW - glow discharge optical emision spectrometry

    KW - ITER-like wall

    U2 - 10.1088/0031-8949/T167/1/014049

    DO - 10.1088/0031-8949/T167/1/014049

    M3 - Article

    VL - 2016

    JO - Physica Scripta

    JF - Physica Scripta

    SN - 0031-8949

    IS - T167

    M1 - 014049

    ER -