Theoretical study of transport process in fusion ignition plasmas

聚变点火等离子体输运过程的理论研究

• 批准号: 19360418
• 负责人: ITOH Kimitaka
• 金额: $ 10.9万
• 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 Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19360418/
• 关键词: プラズマ乱流; 輸送現象; 帯状流; 長距離相関; 過渡応答; 核融合燃焼; 高エネルギー粒子; 長距離相関現象; 高エネギー粒子

In burning plasmas in magnetic confinement fusion device, the pressure-gradient-driven turbulence is affected by the ignition, so that long wavelength fluctuations are established. In this research project, a theoretical basis for turbulent transport was established, in which nonlinear interactions between microscopic and mesoscopic/macroscopic fluctuations are correctly introduced. For instance, turbulent viscosity was formulated, by renormalizing higher order nonlinear effects of zonal flows. In addition, the seesaw mechanism of turbulent transport was proposed. Theoretical results form the basis for understanding and controlling fusion burning plasmas.

在磁约束聚变装置中燃烧等离子体时，点火作用会影响到压力梯度驱动的湍流，从而产生长波涨落。在本研究项目中，正确地引入了微观和细观/宏观涨落之间的非线性相互作用，为湍流输运奠定了理论基础。例如，通过对纬向流的高阶非线性效应进行重新正规化，得到了湍流粘性的公式。此外，还提出了湍流输运的跷跷板机制。理论结果是理解和控制聚变燃烧等离子体的基础。

项目成果

M. Sasaki, K. Itoh, A. Ejiri, Y. Takase

M. Sasaki、K. Itoh、A. Ejiri、Y. Takase

• 发表时间: 2008
• 期刊: Plasma Fusion Res. Special Issue 3
• 作者: M. Sasaki;K. Itoh;A. Ejiri;Y. Takase
• 通讯作者: Y. Takase

On the onset of collapse events in toroidal plasma-turbulence trigger for neoclassical tearing mode in tokamak - in Relaxation Dynamics in Laboratory and Astrophysical Plasmas, Chap.10

关于托卡马克中新古典撕裂模式的环形等离子体湍流塌陷事件的开始 - 实验室和天体物理等离子体的弛豫动力学，第 10 章

• 发表时间: 2010
• 作者: K. Itoh;4名
• 通讯作者: 4名

A Tutorial on Basic Concepts in MHD Turbulence and Turbulent Transport, in Relaxation Dynamics in Laboratory and Astrophysical Plasmas, Chap.4

关于 MHD 湍流和湍流传输基本概念的教程，实验室和天体物理等离子体的弛豫动力学，第 4 章

• 发表时间: 2010
• 作者: P. H. Diamond;S.-I. Itoh;K. Itoh
• 通讯作者: K. Itoh

Physics of zonal flows

• DOI: 10.1063/1.2178779
• 发表时间: 2006-05-01
• 期刊: PHYSICS OF PLASMAS
• 影响因子: 2.2
• 作者: Itoh, K.;Itoh, S. -I.;Nagashima, Y.
• 通讯作者: Nagashima, Y.

Two-dimensionally Steep Structure of the Electric Feld in Tokamak H-mode

托卡马克H型电场的二维陡峭结构

• 发表时间: 2008
• 期刊: Nucl.Fusion 48
• 作者: N. Kasuya;K. Itoh
• 通讯作者: K. Itoh