Fuel hydrogen retention of tungsten and the reduction by inert gas glow discharges

Hino, T.; Yamauchi, Y.; Kimura, Y.; Nishimura, K.; Ueda, Y.

Fuel hydrogen retention of tungsten and the reduction by inert gas glow discharges

Hino, T.; Yamauchi, Y.; Kimura, Y. et al.

Fusion Engineering and Design, 2012, 87(5-6), 876-879

Permalink : https://hdl.handle.net/2115/50798

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アクセス権	open access
URI	https://hdl.handle.net/2115/50798
タイトル	Fuel hydrogen retention of tungsten and the reduction by inert gas glow discharges
著者	Hino, T. ; Yamauchi, Y. ; Kimura, Y. ; Nishimura, K. ; Ueda, Y.
e-Rad_Researcher 30109491 著者名 Hino, T.
著者名 Yamauchi, Y.
著者名 Kimura, Y.
著者名 Nishimura, K.
著者名 Ueda, Y.
言語	英語
キーワード	Tungsten
	Deuterium retention
	Tritium retention
	Glow discharge
	Helium
	Neon
	Argon
	Hydrogen isotope exchange
	Wall baking
発行日	2012-08
出版者	Elsevier B.V.
収録物名	Fusion Engineering and Design
巻(号)	87(5-6)
ページ	876-879
抄録	Polycrystalline tungsten was exposed to deuterium glow discharge followed by He, Ne or Ar glow discharge. The amount of retained deuterium in the tungsten was measured using residual gas analysis. The amount of desorbed deuterium during the inert gas glow discharge was also measured. The amount of retained deuterium was 2-3 times larger compared with a case of stainless steel. The ratios of desorbed amount of deuterium by He, Ne and Ar glow discharges were 4.6, 3.1 and 2.9%, respectively. These values were one order of magnitude smaller compared with the case of stainless steel. The inert gas glow discharge is not suitable to reduce the fuel hydrogen retention for tungsten walls. However, the wall baking with a temperature higher than 700 K is suitable to reduce the fuel hydrogen retention. It is also shown that the use of deuterium glow discharge is effective to reduce the in-vessel tritium inventory in fusion reactors through the hydrogen isotope exchange.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0920-3796
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.fusengdes.2012.02.051