Kinetics of tritium release from thermal neutron-irradiated li 0.17Pb0.83

Makoto Kobayashi; Akiko Hamada; Katsushi Matsuoka; Masato Suzuki; Junya Osuo; Yuki Edao; Satoshi Fukada; Toshihiko Yamanishi; Yasuhisa Oya; Kenji Okuno

doi:10.13182/FST12-A14112

Kinetics of tritium release from thermal neutron-irradiated li _0.17Pb_0.83

Makoto Kobayashi, Akiko Hamada, Katsushi Matsuoka, Masato Suzuki, Junya Osuo, Yuki Edao, Satoshi Fukada, Toshihiko Yamanishi, Yasuhisa Oya, Kenji Okuno

Engineering Science for Advanced energy system

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Tritium release behavior for thermal neutronirradiated Li ₀17Pb_0.83 eutectic alloy was studied. Main tritium release peak was observed in the temperature just a little higher than melting point in a thermal desorption spectrometry (TDS) experiment. Most of tritium release from Li_0.17Pb_0.83 eutectic alloy was found to be governed by diffusion process from the results of isothermal annealing experiments. Tritium diffusivity in a liquid state of Li_0.17Pb_0.83 eutectic alloy was evaluated to be D =4.7×IO^-8exp(-0.13 eV/kT)m²s¹-1¹. Tritium diffusivity was increased by the phase transition of Li₀17Pb_0.83eutectic alloy from a solid state to a liquid state, resulting in the sharp tritium release peak that appeared in TDS spectrum. In addition, about 4% of tritium was trapped in Li₀₁₇Pb₀₈₃ eutectic alloy as Li-T bond.

Original language	English
Pages (from-to)	56-60
Number of pages	5
Journal	Fusion Science and Technology
Volume	62
Issue number	1
DOIs	https://doi.org/10.13182/FST12-A14112
Publication status	Published - Jan 1 2012

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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10.13182/FST12-A14112

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Kobayashi, M., Hamada, A., Matsuoka, K., Suzuki, M., Osuo, J., Edao, Y., Fukada, S., Yamanishi, T., Oya, Y., & Okuno, K. (2012). Kinetics of tritium release from thermal neutron-irradiated li _0.17Pb_0.83 Fusion Science and Technology, 62(1), 56-60. https://doi.org/10.13182/FST12-A14112

Kinetics of tritium release from thermal neutron-irradiated li _0.17Pb_0.83 . / Kobayashi, Makoto; Hamada, Akiko; Matsuoka, Katsushi; Suzuki, Masato; Osuo, Junya; Edao, Yuki; Fukada, Satoshi; Yamanishi, Toshihiko; Oya, Yasuhisa; Okuno, Kenji.

In: Fusion Science and Technology, Vol. 62, No. 1, 01.01.2012, p. 56-60.

Research output: Contribution to journal › Article

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abstract = "Tritium release behavior for thermal neutronirradiated Li 017Pb0.83 eutectic alloy was studied. Main tritium release peak was observed in the temperature just a little higher than melting point in a thermal desorption spectrometry (TDS) experiment. Most of tritium release from Li0.17Pb0.83 eutectic alloy was found to be governed by diffusion process from the results of isothermal annealing experiments. Tritium diffusivity in a liquid state of Li0.17Pb0.83 eutectic alloy was evaluated to be D =4.7×IO-8exp(-0.13 eV/kT)m2s1-11. Tritium diffusivity was increased by the phase transition of Li017Pb0.83eutectic alloy from a solid state to a liquid state, resulting in the sharp tritium release peak that appeared in TDS spectrum. In addition, about 4% of tritium was trapped in Li017Pb083 eutectic alloy as Li-T bond.",

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