Journal Article FZJ-2021-03861

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Scaling of deuterium retention in < 3 MeV proton damaged Beryllium, Eurofer, and W-5Re in the range of 0.0003 to 6 DPA

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2021
The Royal Swedish Academy of Sciences Stockholm

Physica scripta 96, 124051 () [10.1088/1402-4896/ac2efb]

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Abstract: In continuation of earlier work on 3 MeV proton-damaged tungsten and reduced-activation steels we present new results on Eurofer97, Beryllium and W-5%Re sintered alloy irradiated <400 K. Methodical improvements result in largely reduced uncertainties. Beryllium is loaded using a 5 kV D2+ ion-source to 6.3*1021 D m−2 at 300 K. Eurofer97 and W-5Re are loaded in PSI-2 to 3*1025 D m−2. Irradiation and D-loading are conducted at ∼400 K. The D retention is measured by 3He μ-NRA. An exponential saturation fits the W-5Re D-retention data with R2 = 0.99 . The retention increases by a factor 10.3 in W-5Re, similar as in W, but on a ~7 times lower level. Within ±25% uncertainty D Retention in Eurofer97 proves to be independent of displacement damage up to 6.3 DPA. Beryllium shows increased retention by a factor 3 up to the tested maximum of 0.08 DPA. The retention in beryllium starts saturating, but the limited DPA range allows fitting the data with exponentials and power-laws.

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Contributing Institute(s):
  1. Plasmaphysik (IEK-4)
  2. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
Research Program(s):
  1. 134 - Plasma-Wand-Wechselwirkung (POF4-134) (POF4-134)

Appears in the scientific report 2021
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 Datensatz erzeugt am 2021-10-13, letzte Änderung am 2024-07-11


Published on 2021-11-02. Available in OpenAccess from 2022-11-02.:
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