Effect of carbon and oxygen enriched layer on retention and release of deuterium implanted in tungsten and molybdenum

Shinji Nagata, K. Takahiro

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

Retention and thermal release of D atoms implanted into W and Mo containing carbon or oxygen in the surface layers were studied by ion beam analysis techniques. Ion implanted D atoms accumulated within the surface oxide layer on Mo and W crystals to a high concentration at room temperature, although the D distribution in the substrate crystal was not strongly affected by the large retention in the surface. When the oxide layer was filled with a high density of D atoms, it was reduced by subsequent D ion implantation at room temperature and by heat treatment, especially for Mo crystals. A carbon-enriched layer on the Mo crystal retained a large amount of D atoms and also significantly enhanced the D trapping in the substrate crystal at room temperature. D atoms were weakly trapped in the substrate crystal as well as in the interface where strain fields seemed to be created simultaneously with D retention.

Original languageEnglish
Pages (from-to)106-110
Number of pages5
JournalPhysica Scripta T
Volume94
Publication statusPublished - 2001 Oct 24
Event5th International Workshop on Hydrogen Isotopes in Solids - Stockholm, Sweden
Duration: 2000 May 172000 May 19

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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