Hydrogen Retention Properties on the Divertor Tiles in LHD

摘要

Surface modification and hydrogen retention of a LHD divertor tile used for plasma experiments for 8 years were analyzed by using the ion beam analytical techniques. On the deposition dominant area, surfaces were covered mainly with Fe and Ti, respectively. In this area, the amount of hydrogen retention was relatively high, while, on the erosion dominant area, hydrogen retention was much lower than that of the deposition area.