@techreport{oai:nifs-repository.repo.nii.ac.jp:00009908,
 author = {"Kuramoto,  H. and Toi,  K. and Haraki,  N. and Sato,  K. and Xu,  J. and Ejiri,  A. and Narihara,  K. and Seki,  T. and Ohdachi,  S. and Adati,  K. and Akiyama,  R. and Hamada,  Y. and Hirokura,  S. and Kawahata,  K. and Kojima,  M."},
 month = {Jan},
 note = {"The toroidal current penetration is studied in current ramp experiments of the JIPP T-IIU tokamak. The poloidal magnetic field profile in the peripheral region of a plasma (0.5 leq rho leq 1.0) has been measured directly with a newly developed fast response Zeeman polarimeter. The experimental results indicate that an obvious skin effect of toroidal current density is clearly observed during both the current ramp-up and ramp-down experiments. The experimentally obtained toroidal current density profiles are well described by the profiles calculated on the assumption of the neoclassical electrical conductivity. Quasi-linear Delta'-analysis of tearing modes for the measured current density profile is consistent with time behaviour of coherent MHD modes such as m=4/n=1 or m=3/n=1 (m: poloidal mode number, n: toroidal mode number) often observed during the current ramp-up phase. The effect of these MHD modes on current penetration during the current ramp-up discharges is studied."},
 title = {Study of Toroidal Current Penetration during Current Ramp in JIPP T-IIU with Fast Response Zeeman Polarimeter},
 year = {1997}
}