Co-deposited layers in the divertor region of JET-ILW

P. Petersson (Corresponding Author), M. Rubel, H.G. Esser, J. Likonen, S. Koivuranta, A. Widdowson, JET-EFDA Contributores

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.
    Original languageEnglish
    Pages (from-to)814-817
    JournalJournal of Nuclear Materials
    Volume463
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Tungsten
    Beryllium
    tungsten
    Nitrogen
    tiles
    Tile
    beryllium
    Carbon
    nitrogen 15
    Heavy Ions
    nitrogen
    Inconel (trademark)
    Quartz
    probes
    Deuterium
    carbon
    Heavy ions
    microbalances
    erosion
    tracers

    Cite this

    Petersson, P., Rubel, M., Esser, H. G., Likonen, J., Koivuranta, S., Widdowson, A., & Contributores, JET-EFDA. (2015). Co-deposited layers in the divertor region of JET-ILW. Journal of Nuclear Materials, 463, 814-817. https://doi.org/10.1016/j.jnucmat.2014.12.077
    Petersson, P. ; Rubel, M. ; Esser, H.G. ; Likonen, J. ; Koivuranta, S. ; Widdowson, A. ; Contributores, JET-EFDA. / Co-deposited layers in the divertor region of JET-ILW. In: Journal of Nuclear Materials. 2015 ; Vol. 463. pp. 814-817.
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    abstract = "Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.",
    author = "P. Petersson and M. Rubel and H.G. Esser and J. Likonen and S. Koivuranta and A. Widdowson and JET-EFDA Contributores",
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    Petersson, P, Rubel, M, Esser, HG, Likonen, J, Koivuranta, S, Widdowson, A & Contributores, JET-EFDA 2015, 'Co-deposited layers in the divertor region of JET-ILW', Journal of Nuclear Materials, vol. 463, pp. 814-817. https://doi.org/10.1016/j.jnucmat.2014.12.077

    Co-deposited layers in the divertor region of JET-ILW. / Petersson, P. (Corresponding Author); Rubel, M.; Esser, H.G.; Likonen, J.; Koivuranta, S.; Widdowson, A.; Contributores, JET-EFDA.

    In: Journal of Nuclear Materials, Vol. 463, 2015, p. 814-817.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Petersson, P.

    AU - Rubel, M.

    AU - Esser, H.G.

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    AU - Widdowson, A.

    AU - Contributores, JET-EFDA

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    AB - Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.

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