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

[2N14] Deuterium permeation behavior through reduced activation ferritic steel F82H under DEMO reactor blanket condition

*Keisuke Kimura¹, Jumpei Mochizuki¹, Seira Horikoshi¹, Moeki Matsunaga¹, Hikari Fujita², Kouhei Okitsu², Yoshiteru Sakamoto³, Youji Someya³, Hirofumi Nakamura³, Takumi Chikada¹ (1. Graduate school of Integrated Science and Technology, Shizuoka University , 2. The University of Tokyo, 3. National Institutes for Quantum and Radiological Science and Technology)

Keywords:Reduced activation ferritic steel, Hydrogen, Permeation

Hydrogen isotope permeation behaviors in reduced activation ferritic/martensitic (RAFM) steels have been investigated. In this study, deuterium permeation through the RAFM steels heat-treated under simulated environmental conditions has been investigated for more precise prediction of tritium migration at fusion reactor blankets. In the results, the formed oxide layers suppressed deuterium permeation to approximately 1/4.