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Deuterium retention of low activation ferritic steel and boronized wall in JFT-2M

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Title: Deuterium retention of low activation ferritic steel and boronized wall in JFT-2M
Authors: Yamauchi, Y.1 Browse this author →KAKEN DB
Yamaguchi, K. Browse this author
Hirohata, Y. Browse this author
Hashiba, M. Browse this author
Hino, T. Browse this author →KAKEN DB
Tsuzuki, K. Browse this author
Kusama, Y. Browse this author
Authors(alt): 山内, 有二1
Keywords: JFT-2M
material probe
ferritic steel
deuterium retention
Issue Date: 2006
Publisher: Elsevier B.V.
Journal Title: Fusion Engineering and Design
Volume: 81
Issue: 1-7
Start Page: 315
End Page: 319
Publisher DOI: 10.1016/j.fusengdes.2005.09.031
Abstract: Deuterium retention and erosion of F82H exposed to JFT-2M plasmas and the effect of boronization on the deuterium retention were examined based on material probe analysis. The amount of retained deuterium almost saturated after 300 tokamak discharges of deuterium. The retention of helium was clearly observed after helium glow discharge. The desorption temperature was approximately 600 K. While no significant change in the surface atomic composition was observed after the exposure of tokamak discharges, the mixture layer of carbon, iron and oxygen was observed after the helium glow discharge due to surface erosion and redeposition of eroded particles. After the boronization using trimethylboron, both carbon and boron deposited at the surface. The atomic ratio of B to C was 1/3. The amount of retained deuterium significantly increased, three times larger than that before the boronization, owing to that a large amount of deuterium is trapped in the carbon content.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山内 有二

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