Verification of role of ion viscosity for a transition to improved confinement mode in helical plasmas

验证离子粘度在螺旋等离子体中向改进限制模式过渡的作用

• 批准号: 20860089
• 负责人: TAKAHASHI Hiromi
• 金额: $ 2.1万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (Start-up)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20860089/
• 关键词: 核融合; プラズマ; 磁場閉じ込め; 閉じ込め改善モード; イオン粘性; ポロイダルフロー; ヘリカル系; 電極バイアス

We carried out electrode biasing experiments in the LHD and the Heliotron-J. The transition with the negative plasma resistance was successfully achieved during applying triangular-waveform voltage in ECRH discharges. The improvement of the stored energy, the depression of the density fluctuation and the other phenomena indicating the confinement improvement are observed in the forward transition. The threshold voltage was different between forward transition and backward one and the hysteresis was observed in the voltage-current curve.

在LHD和Heliotron-J上进行了电极偏置实验。在ECRH放电中，通过施加三角形波形电压，成功地实现了负等离子体电阻的过渡。在正向跃迁中观察到存储能量的提高、密度波动的减小和约束改善等现象。前向转换和后向转换的阈值电压不同，电压-电流曲线存在滞后性。

项目成果

Density Collapse in Improved Confinement Mode on Tohoku University Heliac

东北大学 Heliac 改进约束模式中的密度崩溃

• 发表时间: 2008
• 作者: S. Kitajima;Y. Tanaka;H. Utoh;H. Umetsu;J. Sato ;K. Ishii;T. Kobuchi,A. Okamoto;M. Sasao;Y. Suzuki;M. Yokoyama;S. Inagaki;K. Nishimura,H. Takahashi;H. Ogawa and M. Takayama
• 通讯作者: H. Ogawa and M. Takayama

Study of Transition Mechanism Based on Ion Viscosity by Electrode Biasing in Helical Plasmas

螺旋等离子体中基于电极偏压离子粘度的跃迁机理研究

• 发表时间: 2009
• 作者: H. Takahashi;他
• 通讯作者: 他

Effects of Rotating Magnetic Islands Driven by External Perturibation Fields in the TU-Heliac

TU-Heliac 中外部扰动场驱动的旋转磁岛效应

• 发表时间: 2008
• 期刊: Plasma and Fusion Research 3
• 作者: S. Kitajima;et al.
• 通讯作者: et al.

Experimental study of flow bifurcation by an electrode biasing in TU-Heliac, CHS and Heliotron J, "12th International Workshop on "H-mode Physics and Transport Barriers"

TU-Heliac、CHS 和 Heliotron J 中电极偏置的流动分岔实验研究，“第 12 届“H 模式物理和传输势垒”国际研讨会

• 发表时间: 2009
• 作者: S. Kitajima;H. Takahashi;他
• 通讯作者: 他

Experimental study of flow bifurcation by an electrode biasing in TU-Heliac, CHS and Heliotron J

TU-Heliac、CHS 和 Heliotron J 中电极偏置流分叉的实验研究

• 发表时间: 2009
• 作者: S.Kitajima;et al
• 通讯作者: et al