@techreport{oai:nifs-repository.repo.nii.ac.jp:00009660, author = {Ida, K. and Inagaki, S. and Tamura, N. and Morisaki, T. and Ohyabu, N. and Khlopenkov, K. and Sudo, S. and Watanabe, K. and Yokoyama, M. and Shimozuma, T. and Takeiri, Y. and Itoh, K. and Yoshinuma, M. and Liang, Y. and Narihara, K. and Tanaka, K. and Nagayama, Y. and Tokuzawa, T. and Kawahata, K. and Suzuki, H. and Komori, A. and Akiyama, T. and Ashikawa, N. and Emoto, M. and Funaba, H. and Goncharov, P. and Goto, M. and Idei, H. and Ikeda, K. and Isobe, M. and Kaneko, O. and Kawazome, H. and Kobuchi, T. and Kostrioukov, A. and Kubo, S. and Kumazawa, R. and Masuzaki, S. and Minami, T. and Miyazawa, J. and Morita, S. and Murakami, S. and Muto, S. and Mutoh, T. and Nakamura, Y. and Nakanishi, H. and Narushima, Y. and Nishimura, K. and Noda, N. and Notake, T. and Nozato, H. and Ohdachi, S. and Oka, Y. and Osakabe, M. and Ozaki, T. and Peterson, B. J. and Sagara, A. and Saida, T. and Saito, K. and Sakakibara, S. and Sakamoto, R. and Sasao, M. and Sato, K. and Sato, M. and Seki, T. and Shoji, M. and Takeuchi, N. and Toi, K. and Torii, Y. and Watari, T. and Xu, Y. and Yamada, H. and Yamada, I. and Yamamoto, S. and Yamamoto, T. and Yoshimura, Y. and Ohtake, I. and Ohkubo, K. and Mito, T. and Satow, T. and Uda, T. and Yamazaki, K. and Matsuoka, K. and Motojima, O. and Fujiwara, M. and Tsumori, K.}, month = {Oct}, note = {The structure of the radial electric field and heat transport at the magnetic island in the Large Helical Device is investigated by measuring the radial profile of poloidal flow with charge exchange spectroscopy. The convective poloidal flow inside the island is observed when the n/m=1/1 external perturbation field becomes large enough to increase the magnetic island width above a critical value (15-20% of minor radius) in LHD. This convective poloidal flow results in a non-flat space potential inside the magnetic island. The sign of the curvature of the space potential depends on the radial electric field at the boundary of the magnetic island. The heat transport inside the magnetic island is studied with a cold pulse propagation technique. The experimental results show the existence of the radial electric field shear at the boundary of the magnetic island and a reduction of heat transport inside the magnetic island}, title = {Radial Electric Field and Transport near the Rational Surface and the Magnetic Island in LHD}, year = {2002} }