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

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

doi:10.13182/FST60-1163

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

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

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	1163-1166
Number of pages	4
Journal	Fusion Science and Technology
Volume	60
Issue number	3
DOIs	https://doi.org/10.13182/FST60-1163
Publication status	Published - 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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Edao, Y., Okitsu, H., Noguchi, H., & Fukada, S. (2011). Permeation of two-component hydrogen isotopes in lithium-lead eutectic alloy. Fusion Science and Technology, 60(3), 1163-1166. https://doi.org/10.13182/FST60-1163

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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.",

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