Mffect of non-Maxwellian distribution on the neoclassical transport and the possibility of transport improvement

非麦克斯韦分布对新古典输运的影响以及输运改进的可能性

• 批准号: 17560730
• 负责人: MURAKAMI Sadayoshi
• 金额: $ 2.33万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560730/
• 关键词: non-axisymmetric configuration; neoclassical transport; energetic particles; non-Maxwellian distribution; electron root; radial electric field; transport improvement; 非マックスウェル分布

Recently, a rapid increase of ion temperature has been observed in LHD high-Z plasma. In this plasma, the strong tangentially injection NBI heating is applied to a low-density plasma and beam ion density becomes comparable to the background electron density Therefore a consistent analysis including the bean ion distribution is necessary to determine the radial electric field.Effect of tangentially injected beam ions on the radial electric field transition is studied in LHD plasma. The beam ion transport is analyzed by GNET/FIT and the neoclassical transport is by DCOM/NNW. It is found that the radial transport of tangentially injected beam ions during slowing-down is very small compared to that of thermal ions and the net ion particle flux is reduced effectively by the existence of the slowing-down beam ions. Also we found that this reduction of net ion particle flux can enhance the transition of the radial electric field to the electron root in LHD.

最近，在LHD高Z等离子体中观察到离子温度的快速升高。在这种等离子体中，强切向注入NBI加热被施加到低密度等离子体中，束离子密度变得与背景电子密度相当，因此，包括束离子分布的一致性分析对于确定径向电场是必要的。束离子输运用GNET/FIT分析，新经典输运用DCOM/NNW分析。结果表明，与热离子相比，切向注入的束离子在慢化过程中的径向输运非常小，慢化束离子的存在有效地降低了净离子粒子通量.我们还发现，这种减少的净离子粒子通量可以增强过渡的径向电场的电子根在LHD。

项目成果

Effect of Neoclassical Transport Optimization on Elecon Heat Transport in Low-collisionality LHD plasmas

新古典输运优化对低碰撞 LHD 等离子体中电子热输运的影响

• 发表时间: 2007
• 期刊: Fusion Sci. Technl. 51
• 作者: I.;Higashi;A.Oku;S. Murakami
• 通讯作者: S. Murakami

Impurity Transport Studies on LHD

LHD 的杂质迁移研究

• 发表时间: 2007
• 期刊: Plasma and Fusion Research 2
• 作者: A.;Wakasa;M.Kojima;M. Yokoyama;奥 彬;Yu. IGITKHANOV
• 通讯作者: Yu. IGITKHANOV

Study of poloidal and toroidal electric field generation by the electron cyclotron heating in a helical plasma

螺旋等离子体中电子回旋加热产生极向和环形电场的研究

• 发表时间: 2008
• 期刊: Plasma and Fusion Research 3(印刷中)
• 作者: I.Krakovsky;J.Lokaj;Z.Sedlakova;Y.Ikeda;K.Nishida;池田 裕子;I.Higashi
• 通讯作者: I.Higashi

Study of energetic ion confinement during combined NBI and ICRF heating in LHD

LHD 中 NBI 和 ICRF 联合加热过程中高能离子约束的研究

• 发表时间: 2007
• 作者: M.Kojima;M.Tosaka;S.Kohjiya;Y.Ikeda;S. Murakami
• 通讯作者: S. Murakami

Role of neoclassical heat conduction in LHD

新古典热传导在 LHD 中的作用

• 发表时间: 2006
• 作者: S.;Murakami;K. Saito;S. Murakami
• 通讯作者: S. Murakami