[2N13-15] Behavior of Hydrogen Isotope in Fusion Materials

[2N13] Heavy ion irradiation effects on microstructure and hydrogen isotope permeation behavior in yttrium oxide coating prepared by magnetron sputtering

*Kazuki Nakamura¹, Hikari Fujita², Jan Engels³, Kiyohiro Yabuuchi⁴, Sosuke Kondo⁴, Sho Kano², Takayuki Terai², Takumi Chikada¹ (1. Shizuoka University, 2. The University of Tokyo, 3. Forschungszentrum Jülich, 4. Kyoto University)

Keywords:Tritium, Ceramics coating, Irradiation

Tritium permeation barrier has been investigated for several decades to establish fusion reactor liquid blanket systems. In this study, yttrium oxide coatings were prepared by magnetron sputtering, and then the coated samples were irradiated by Fe ion on various parameters. Structure change was confirmed in the irradiated samples, and it depended on damage concentration.