1. [1] Y. Kozaki, Fusion Sci. Technol. 49, 542 (2006).
2. [2] Y. Kozaki et al., J. Plasma Fusion Res. 82, 817 (2006) (in Japanese).
3. [3] Y. Kozaki et al., J. Plasma Fusion Res. 83, 3 (2007) (in Japanese).
4. [4] H. Furukawa and T. Norimatsu, J. Plasma Fusion Res. 87, 51 (2011) (in Japanese).
5. [5] H. Furukawa, T. Jozaki, Y. Kozaki et al., J. Plasma Fusion Res. 82, 617 (2006) (in Japanese).