Microstructure and thermal desorption of deuterium in heavy-ion-irradiated pure tungsten

Hideo Watanabe, Naoki Futagami, Shiori Naitou, Naoaki Yoshida

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12 Citations (Scopus)

Abstract

To understand the fundamental processes of deuterium retention and desorption of irradiated plasma facing materials, thermal desorption of deuterium in pure W with and without ion irradiation up to 2 dpa by 2.4 MeV Cu2+ have been investigated. After the ion irradiation at room temperature, high density of small interstitial typed dislocation loops and also nano-voids due to cascade collisions were detected by TEM observation. Thermal desorption of spectra of D showed that fine vacancy clusters are formed even at low fluence and at room temperature irradiation, these defects act as the strong trapping center of deuterium in the temperature range of 660-900 K.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalJournal of Nuclear Materials
Volume455
Issue number1-3
DOIs
Publication statusPublished - Dec 2014

All Science Journal Classification (ASJC) codes

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

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