Permeation of two-component hydrogen isotopes in lithium-lead eutectic alloy

Y. Edao, H. Okitsu, H. Noguchi, S. Fukada

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We performed an experiment of H and D permeation through Li 17Pb83 in the two-component (H-VD) system by an unsteady permeation method to clarify interactions between H and D atoms. It was found that H and D permeate independently regardless of the H/D composition ratio in the upstream gas. Dissolution of H and D atoms into Li17Pb 83 follows the Sieverts' law in the two-component system in a similar way to the single one. Diffusion of H and D in Li17Pb83 was the rate-determining step in the overall permeation process. An isotope effect of permeability between H and D was around 1.4 in the temperature range from 400°C to 700°C. The ratio of the isotope effect was in proportion to the square root of mass ratio of D to H. Tritium permeation can be estimated in a similar way.

Original languageEnglish
Pages (from-to)1163-1166
Number of pages4
JournalFusion Science and Technology
Volume60
Issue number3
DOIs
Publication statusPublished - Oct 2011

All Science Journal Classification (ASJC) codes

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

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