Investigation of radial electric field in the edge region and magnetic field structure in the Large Helical Device

Y. Suzuki, K. Ida, K. Kamiya, M. Yoshinuma, H. Tsuchiya, S. Inagaki, S. Sakakibara, K. Y. Watanabe, Y. Narushima, S. Ohdachi, I. Yamada, R. Yasuhara, K. Tanaka, T. Akiyama, H. Yamada