Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

H. Bergsåker (Corresponding Author), B. Emmoth, P. Petersson, G. Possnert, J.P. Coad, Jari Likonen, Tommi Renvall

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)

    Abstract

    Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak.
    Since the layers are about 100 μm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few μm spot size.
    A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.
    Original languageEnglish
    Pages (from-to)215-221
    JournalJournal of Nuclear Materials
    Volume362
    Issue number2-3
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Beryllium
    Nuclear reactions
    microbeams
    Deuterium
    Focused ion beams
    Stainless Steel
    Backscattering
    Tile
    Polishing
    nuclear reactions
    Spectrometry
    Ion beams
    surface layers
    Carbon
    Stainless steel
    steels
    Ions
    Oxygen
    Plasmas
    cross sections

    Keywords

    • surface analysis
    • divertor
    • JET
    • ITER
    • tokamak
    • fusion energy
    • plasma
    • layers

    Cite this

    Bergsåker, H. ; Emmoth, B. ; Petersson, P. ; Possnert, G. ; Coad, J.P. ; Likonen, Jari ; Renvall, Tommi. / Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor. In: Journal of Nuclear Materials. 2007 ; Vol. 362, No. 2-3. pp. 215-221.
    @article{38a1dd80475b4bc88c895eeb031f9204,
    title = "Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor",
    abstract = "Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 μm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few μm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10{\%}.",
    keywords = "surface analysis, divertor, JET, ITER, tokamak, fusion energy, plasma, layers",
    author = "H. Bergs{\aa}ker and B. Emmoth and P. Petersson and G. Possnert and J.P. Coad and Jari Likonen and Tommi Renvall",
    year = "2007",
    doi = "10.1016/j.jnucmat.2007.01.046",
    language = "English",
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    pages = "215--221",
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    Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor. / Bergsåker, H. (Corresponding Author); Emmoth, B.; Petersson, P.; Possnert, G.; Coad, J.P.; Likonen, Jari; Renvall, Tommi.

    In: Journal of Nuclear Materials, Vol. 362, No. 2-3, 2007, p. 215-221.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

    AU - Bergsåker, H.

    AU - Emmoth, B.

    AU - Petersson, P.

    AU - Possnert, G.

    AU - Coad, J.P.

    AU - Likonen, Jari

    AU - Renvall, Tommi

    PY - 2007

    Y1 - 2007

    N2 - Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 μm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few μm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.

    AB - Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 μm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few μm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.

    KW - surface analysis

    KW - divertor

    KW - JET

    KW - ITER

    KW - tokamak

    KW - fusion energy

    KW - plasma

    KW - layers

    U2 - 10.1016/j.jnucmat.2007.01.046

    DO - 10.1016/j.jnucmat.2007.01.046

    M3 - Article

    VL - 362

    SP - 215

    EP - 221

    JO - Journal of Nuclear Materials

    JF - Journal of Nuclear Materials

    SN - 0022-3115

    IS - 2-3

    ER -