Temperature dependence of deuterium retention in tungsten deposits by deuterium ion irradiation

K. Katayama, K. Uehara, H. Date, S. Fukada, H. Watanabe

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7 Citations (Scopus)

Abstract

Abstract Tungsten (W) deposits were formed by hydrogen plasma sputtering and blisters were observed on the surface. The W deposits and W foils were exposed to deuterium ions with 2 keV-D2+ to doses of 1.0 × 1021 D2+/m2 at 294 and 773 K in addition to 573 K in the present authors' previous work. Hydrogen isotopes release behaviors from the W deposits and W foils were observed by the thermal desorption spectroscopy method. The amount of deuterium released from the W deposit was considerably larger than that from W foil. The obtained deuterium retention in D/m2 was in the range of deuterium retention in polycrystalline tungsten. Not only implanted deuterium but also hydrogen, which was incorporated during the sputtering-deposition process, were released from the W deposits. A hydrogen release peak at around 1100 K was observed for the W deposits. This is considered to be due to the rupture of the blisters.

Original languageEnglish
Article number48697
Pages (from-to)1033-1036
Number of pages4
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - Jul 22 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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