Nishijima, D., Ye, M. Y., Ohno, N., & Takamura, S. (2003). Formation mechanism of bubbles on tungsten surface with low energy and high flux helium plasma irradiation in NAGDIS-II. Talk presented at 11th International Conference on Fusion Reactor Materials (ICFRM-11). Kyoto. 2003-12-07 - 2003-12-12.