@techreport{oai:nifs-repository.repo.nii.ac.jp:00009594,
 author = {"Hamada,  Y. and Nishizawa,  A. and Kawasumi,  Y. and Kawahata,  K. and Itoh,  K. and Ejiri,  A. and Toi,  K. and Narihara,  K. and Sato,  K. and Seki,  T. and Iguchi,  H. and Fujisawa,  A. and Adachi,  K. and Hidekuma,  S. and Hirokura,  S. and Ida,  K. and Kojima,  M. and Koong,  J. and Kumazawa,  R. and Kuramoto,  H. and Liang,  R. and Minami,  T. and Sakakita,  H. and Sasao,  M. and Sato,  K.N. and Tsuzuki,  T. and Xu,  J. and Yamada,  I. and Watari,  T."},
 month = {Dec},
 note = {Fast changes of electric potential with different polarities are observed during sawtooth oscillation in a core region of a tokamak plasma using a heavy ion beam probe.  The potential change inside the inversion radius is found to be positive.  The change is negative outside the inversion radius and shows clearly a propagation nature.  The observed potential can be interpreted by the mixture of the potentials of two origins.  One of them drives the fast MHD plasma motion through E/B drift and the other is a barrier potential induced by mixing of hot and cold plasmas at sawtooth crash.},
 title = {Fast Potential Change in Sawteeth in JIPP T-IIU Tokamak Plasmas},
 year = {1994}
}