@article{oai:nifs-repository.repo.nii.ac.jp:00010538,
 author = {Kobayashi, T. and Takahashi,  H. and Ngaoka, K. and Sasaki, M. and Nakata, M. and Yokoyama, M. and Seki, R. and Yoshimura, M. and Ida, K},
 journal = {Scientific Reports},
 month = {Nov},
 note = {The isotope effect, which has been a long-standing mystery in the turbulent magnetically confined plasmas, is the phenomena that the plasma generated with heavier hydrogen isotope show a mitigated transport. This is on the contrary to what is predicted with the simple scaling theory, in which the heavier ions easily diffuse because of its larger gyro-radius. Thanks to the newly developed analysis method and a comprehensive parameter scan experiment in the steady-state plasmas in the Large Helical Device (LHD), the isotope effect was clearly observed in the self-organized internal transport barrier (ITB) structure for the first time. Comparing the ITB intensity in deuterium (D) and hydrogen (H) plasmas, two distinct hydrogen isotope effects are found: stronger ITB is formed in D plasmas and a significant edge confinement degradation accompanied by the ITB formation emerges in H plasmas. This observation sheds light on a new aspect of the turbulent plasmas regarding how the basic properties of the fluid material affect the turbulent structure formation in the open-system.},
 title = {Isotope effects in self-organization of internal transport barrier and concomitant edge confinement degradation in steady-state LHD plasmas},
 volume = {9},
 year = {2019}
}