Quantification of deuterium irradiation induced defect concentrations in tungsten

T. Ahlgren (Corresponding Author), K. Heinola, Elizaveta Vainonen-Ahlgren, Jari Likonen, J. Keinonen

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)

    Abstract

    Tungsten has been proposed for first wall material in thermonuclear reactors, where its behaviour in the presence of hydrogen containing plasma irradiation at elevated temperatures is of key interest. Deuterium induced defects in polycrystalline tungsten have been studied. Deuterium was implanted into tungsten samples and retained D-concentrations were analyzed with nuclear reaction analysis and secondary ion mass spectrometry. We observed four different defect types that trap deuterium with release temperatures of 455, 560, 663 and 801 K. Total number of each defect type produced by 5.8 × 1016 cm−2 30-keV D implantation at room temperature was obtained to be 0.260, 0.156, 0.082 and 0.056 traps cm−2/implanted D atom.
    Original languageEnglish
    Pages (from-to)436-439
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
    Volume249
    Issue number1-2
    DOIs
    Publication statusPublished - 2006
    MoE publication typeA1 Journal article-refereed
    EventSeventeenth International Conference on Ion Beam Analysis - Sevilla, Spain
    Duration: 26 Jun 20051 Jul 2005

    Keywords

    • defect
    • deuterium
    • tungsten
    • NRA
    • SIMS
    • plasma
    • fusion energy
    • fusion reactors

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