Isotope effects on desorption kinetics of hydrogen isotopes implanted into stainless steel by glow discharge
- Hydrogen Isotope Research Center, University of Toyama, Gofuku, Toyama (Japan)
- National Institute for Fusion Science, Toki-shi, Gifu (Japan)
In a fusion device the control of fuel particles implies to know the desorption rate of hydrogen isotopes by the plasma-facing materials. In this paper desorption kinetics of hydrogen isotopes implanted into type 316L stainless steel by glow discharge have been studied by experiment and numerical calculation. The temperature of a maximum desorption rate depends on glow discharge time and heating rate. Desorption spectra observed under various experimental conditions have been successfully reproduced by numerical simulations that are based on a diffusion-limited process. It is suggested, therefore, that desorption rate of a hydrogen isotope implanted into the stainless steel is limited by a diffusion process of hydrogen isotope atoms in bulk. Furthermore, small isotope effects were observed for the diffusion process of hydrogen isotope atoms. (authors)
- OSTI ID:
- 22429744
- Journal Information:
- Fusion Science and Technology, Vol. 67, Issue 3; Conference: TRITIUM 2013: 10. International Conference on Tritium Science and Technology, Nice Acropolis (France), 21-25 Oct 2013; Other Information: Country of input: France; 3 refs.; ISSN 1536-1055
- Country of Publication:
- United States
- Language:
- English
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