@article{oai:nifs-repository.repo.nii.ac.jp:00010798,
 author = {TAKAHASHI,  Hiromi and NAGAOKA,  Kenichi and NAGAOKA, Ken-ichi and MURAKAMI,  Sadayoshi and OSAKABE,  Masaki and NAKANO,  Haruhisa and IDA,  Katsumi and TSUJIMIRA, Toru and TSUJIMURA, Toru Ii and KUBO,  Shin and Kobayashi, Tatsuya and TANAKA,  Kenji and SEKI,  Ryosuke and TAKEIRI,  Yasuhiko and YOKOYAMA,  Masayuki and Maeta, S. and Nakata, Motoki and YOSHINUMA,  Mikiro and YOSHINUMA,  Mikirou and YAMADA,  Ichihiro and YASUHARA,  Ryo and IDO,  Takeshi and SHIMIZU,  Akihiro and TSUCHIYA,  Hayato and TOKUZAWA,  Tokihiko and GOTO,  Motoshi and OISHI,  Tetsutaro and MORITA,  Shigeru and SUZUKI,  Chihiro and EMOTO,  Masahiko and TSUMORI,  Katsuyoshi and IKEDA,  Katsunori and KISAKI,  Masashi and SHIMOZUMA,  Takashi and YOSHIMURA,  Yasuo and IGAMI,  Hiroe and MAKINO,  Ryohei and SEKI,  Tetsuo and KASAHARA,  Hiroshi and SAITO,  Kenji and KAMIO,  Shuji and NAGASAKI,  Kazunobu and MUTOH,  Takashi and KANEKO,  Osamu and MORISAKI,  Tomohiko and LHD, Experiment Group},
 issue = {8},
 journal = {Nuclear Fusion},
 month = {Jul},
 note = {0000-0001-6984-9174, A simultaneous high ion temperature (Ti) and high electron temperature (Te) regime was successfully extended due to an optimized heating scenario in the LHD. Such high-temperature plasmas were realized by the simultaneous formation of an electron internal transport barrier (ITB) and an ion ITB by the combination of high power NBI and ECRH. Although the ion thermal confinement was degraded in the plasma core with an increase of Te/Ti by the on-axis ECRH, it was found that the ion thermal confinement was improved at the plasma edge. The normalized ion thermal diffusivity ${{\chi}_{\text{i}}}/T_{\text{i}}^{1.5}$ at the plasma edge was reduced by 70%. The improvement of the ion thermal confinement at the edge led to an increase in Ti in the entire plasma region, even though the core transport was degraded.},
 title = {Extension of operational regime in high-temperature plasmas and effect of ECRH on ion thermal transport in the LHD},
 volume = {57},
 year = {2017}
}