Erosion of tungsten and carbon markers in the outer divertor of ASDEX-Upgrade

M. Mayer, V. Rohde, G. Ramos, Elizaveta Vainonen-Ahlgren, Jari Likonen, J.L. Chen

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    Abstract

    The erosion of tungsten and carbon marker layers was studied in the outer divertor of ASDEX Upgrade. The outer strike point area and a large fraction of the outer baffle are net erosion areas for both materials.
    The net erosion rate of carbon is about 10–20 times larger than the net erosion rate of tungsten.
    The erosion is strongly inhomogeneous due to surface roughness, with a large erosion on plasma exposed areas of the rough surfaces, and deposition in recessions and pores.
    Original languageEnglish
    Pages (from-to)106-110
    JournalPhysica Scripta
    Volume2007
    Issue numberT128
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Keywords

    • JET
    • plasma
    • fusion energy
    • fusion reactors
    • ITER
    • plasma toroidal confinement
    • divertor tiles
    • tungsten
    • plasma-wall interactions

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    Mayer, M., Rohde, V., Ramos, G., Vainonen-Ahlgren, E., Likonen, J., & Chen, J. L. (2007). Erosion of tungsten and carbon markers in the outer divertor of ASDEX-Upgrade. Physica Scripta, 2007(T128), 106-110. https://doi.org/10.1088/0031-8949/2007/T128/021