@article{oai:nifs-repository.repo.nii.ac.jp:00000620,
 author = {YOKOYAMA,  Masayuki and IDA,  Katsumi and YOSHINUMA,  Mikiro and SHIMOZUMA,  Takashi and WATANABE,  Kiyomasa and MURAKAMI,  Sadayoshi and WAKASA,  Arimitsu and KUBO,  Shin and TAKEIRI,  Yasuhiko and NARIHARA,  Kazumichi and MORITA,  Shigeru and TANAKA,  Kenji and YOSHIMURA,  Yasuo and NOTAKE,  Takashi and OSAKABE,  Masaki and ITOH,  Kimitaka and KOMORI,  Akio and MOTOJIMA,  Osamu and LHD Experimental Group, and LHD Experimental Groups, and the  LHD Experimental Groups, and the LHD Experimental Group,},
 journal = {Journal of Plasma and Fusion Research SERIES, Journal of Plasma and Fusion Research SERIES},
 month = {Jan},
 note = {Transition property of the radial electric field (Er) in LHD have been theoretically investigated and also applied to explain experimental results. Especially, effects of the helicity of the magnetic configuration on the condition to realize the electron root are examined. Larger helicity makes the threshold collisionality higher. This is attributed to the nonlinear dependence of Γe(Er) in a low collisional regime. This interesting feature predicts that the threshold temperature becomes higher for a case of smaller helicity. The variation of the threshold density anticipated from the analysis for cases with different magnetic axis position is qualitatively verified in the density scan experiment.},
 pages = {218--221},
 title = {The Effect of Non-Axisymmetry of Magnetic Configurations on Radial Electric Field Transition Properties in the LHD},
 volume = {6},
 year = {2004}
}