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Fuel hydrogen retention of tungsten and the reduction by inert gas glow discharges
| Title: | Fuel hydrogen retention of tungsten and the reduction by inert gas glow discharges |
| Authors: | Hino, T. Browse this author →KAKEN DB | | Yamauchi, Y. Browse this author | | Kimura, Y. Browse this author | | Nishimura, K. Browse this author | | Ueda, Y. Browse this author |
| Keywords: | Tungsten | | Deuterium retention | | Tritium retention | | Glow discharge | | Helium | | Neon | | Argon | | Hydrogen isotope exchange | | Wall baking |
| Issue Date: | Aug-2012 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Fusion Engineering and Design |
| Volume: | 87 |
| Issue: | 5-6 |
| Start Page: | 876 |
| End Page: | 879 |
| Publisher DOI: | 10.1016/j.fusengdes.2012.02.051 |
| Abstract: | 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. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/50798 |
| 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)
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Submitter: 日野 友明
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