Evaluation of residual tritium in stainless steel irradiated at SINQ target 3

Kenji Kikuchi, Hirofumi Nakamura, Kazufumi Tsujimoto, Kazuhiro Kobayashi, Sumi Yokoyama, Shigeru Saitoh, Toshihiko Yamanishi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A MW spallation target will need an accurate amount of tritium generation in materials for post irradiation experiments. A high-energy proton of 580 MeV generates a variety of constituents in the SINQ target mainly through spallation reaction, and these constituents included helium and hydrogen isotopes. For the SINQ target hydrogen and helium are generated to hundreds appm H and tens appm He, respectively. However, tritium gas production has not yet been reported. Evaluation of tritium gas generation in the specimens of target 3 was done by calculation. Results were compared with gamma spectrum measurement of austenitic and martensitic-ferritic steels three and a half years later after irradiation. Good agreement was obtained for activity of the main isotope. Residual tritium measurement was carried for the austenitic stainless steel specimens irradiated below 250 °C by the thermal desorption method four and a half years later after irradiation. An ion chamber monitored the tritium concentration. Water bubblers collected all tritium after oxidation of tritium by the oxidation catalysts. It is found that a release of tritium began over 250 °C and the ratio of residual tritium to generated one is estimated to be less than 20%.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalJournal of Nuclear Materials
Volume356
Issue number1-3
DOIs
Publication statusPublished - 15-09-2006
Externally publishedYes

Fingerprint

Tritium
Stainless Steel
tritium
stainless steels
Stainless steel
evaluation
Helium
Irradiation
spallation
Isotopes
Hydrogen
irradiation
Gases
Oxidation
Martensitic steel
Thermal desorption
oxidation
Ionization chambers
helium isotopes
hydrogen isotopes

All Science Journal Classification (ASJC) codes

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

Cite this

Kikuchi, K., Nakamura, H., Tsujimoto, K., Kobayashi, K., Yokoyama, S., Saitoh, S., & Yamanishi, T. (2006). Evaluation of residual tritium in stainless steel irradiated at SINQ target 3. Journal of Nuclear Materials, 356(1-3), 157-161. https://doi.org/10.1016/j.jnucmat.2006.05.008
Kikuchi, Kenji ; Nakamura, Hirofumi ; Tsujimoto, Kazufumi ; Kobayashi, Kazuhiro ; Yokoyama, Sumi ; Saitoh, Shigeru ; Yamanishi, Toshihiko. / Evaluation of residual tritium in stainless steel irradiated at SINQ target 3. In: Journal of Nuclear Materials. 2006 ; Vol. 356, No. 1-3. pp. 157-161.
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Kikuchi, K, Nakamura, H, Tsujimoto, K, Kobayashi, K, Yokoyama, S, Saitoh, S & Yamanishi, T 2006, 'Evaluation of residual tritium in stainless steel irradiated at SINQ target 3', Journal of Nuclear Materials, vol. 356, no. 1-3, pp. 157-161. https://doi.org/10.1016/j.jnucmat.2006.05.008

Evaluation of residual tritium in stainless steel irradiated at SINQ target 3. / Kikuchi, Kenji; Nakamura, Hirofumi; Tsujimoto, Kazufumi; Kobayashi, Kazuhiro; Yokoyama, Sumi; Saitoh, Shigeru; Yamanishi, Toshihiko.

In: Journal of Nuclear Materials, Vol. 356, No. 1-3, 15.09.2006, p. 157-161.

Research output: Contribution to journalArticle

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T1 - Evaluation of residual tritium in stainless steel irradiated at SINQ target 3

AU - Kikuchi, Kenji

AU - Nakamura, Hirofumi

AU - Tsujimoto, Kazufumi

AU - Kobayashi, Kazuhiro

AU - Yokoyama, Sumi

AU - Saitoh, Shigeru

AU - Yamanishi, Toshihiko

PY - 2006/9/15

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