Desorption of hydrogen trapped in carbon and graphite

H. Atsumi, Y. Takemura, T. Miyabe, T. Konishi, T. Tanabe, T. Shikama

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Thermal desorption behavior of deuterium (D2) from isotropic graphites and a carbon fiber carbon composite (CFC) charged with D2 gas has been investigated to obtain information concerning hydrogen recycling and tritium inventory in fusion experimental devices as well as a futuristic fusion reactor. After thermal desorption experiments were conducted at temperatures up to 1740 K, a desorption peak at approximately 1600 K (peak 4) was discovered. This is in addition to the previously known peak at approximately 1300 K (peak 3). Peak 3 can be attributed to the release of deuterium controlled by the diffusion process in a graphite filler grain and peak 4 can be attributed to the detrapping of deuterium released from an interstitial cluster loop edge site. Activation energies of peaks 3 and 4 are estimated to be 3.48 and 6.93 eV, respectively.

本文言語English
ページ(範囲)S746-S750
ジャーナルJournal of Nuclear Materials
442
1-3 SUPPL.1
DOI
出版ステータスPublished - 2013 4 10

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 原子力エネルギーおよび原子力工学

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