2010 年 31 巻 3 号 p. 137-143
Plasma wall interaction in fusion reactors is very complicated phenomena, because plasma facing materials suffer heavy irradiation of plasma particles, neutrons, impurity deposition and high flux heat load synergistically. This article introduces fundamental process of hydrogen and helium irradiation effects which are very important to understand plasma wall interaction in materials and also introduces recent studies on nano-scale plasma-wall interaction in actual experimental plasma confinement devices.