@article{oai:nifs-repository.repo.nii.ac.jp:00000242, author = {Ida, K. and Hidekuma, S. and Miura, Y. and Fujita, T. and Mori, M. and Hoshino, K. and Suzuki, N. and Yamauchi, T. and JFT-2M, Group}, issue = {No.11}, journal = {Physical Review Letters}, month = {Sep}, note = {The structure of the edge radial electric field E_r inferred from the poloidal rotation velocity is compared with that of the particle and thermal transport barrier for H-mode plasmas in JFT-2M. Both E_r and its gradient ∂E_r/∂r in the thermal transport barrier are found to become more negative at the L-H transition. On the other hand, ∂E_r/∂r is more positive outside of the separatrix. The shear of the radial electric field and poloidal rotation velocity in the H mode is localized within the order of an ion poloidal gyroradius near the separatrix, in the region of ion collisionality nu ast_rapprox 20-40}, title = {Edge electric-field profiles of H-mode plasmas in the JFT-2M tokamak}, volume = {Vol.65}, year = {1990} }