Physics of The Upper Limit of Electron Density of Tokamak Plasma

托卡马克等离子体电子密度上限物理

• 批准号: 08680512
• 负责人: MIYAMOTO Kenro
• 金额: $ 1.47万
• 依托单位: Faculty of Engineering, SEIKEI University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08680512/
• 关键词: Scrape-Off-Layr (SOL); Tokamak; Divertor; Detached Plasma; Two Point SOL Model; スクレイプ・オフ層(SOL); 密度上限

The relations between electron temperature T_<eS>, electron density n_<eS> in a scrape-off-layr (SOL) of tokamak, electron temperature T_<eD>, electron density n_<eD> near divertor plate and heat load q_* across separatrix are studied by a two points SOL model, which includes the effects of recent experimental observations such as the difference of electron and ion temperatures as well as the difference of radial decay lengths of electron temperature and density. This model adapts the boundary condition of constant electron temperature at the separatrix.The various SOL parameters are calculated by this model and compared with the experimental results of JT60U,JET and Alcator C Mod. They are consistent with each other. The scaling of SOL parameters of detached plasma are derived.The SOL parameters of ITER (Internation Tokamak Experimental Reactor) are predicted by this model.

本文用两点SOL模型研究了托卡马克刮除层中电子温度T_<eS>、电子密度n_、<eS>偏滤器板附近电子温度T_<eD>、电子密度n_<eD>与分界线热负荷q_* 之间的关系，其中考虑了最近的实验观测结果，如电子温度和离子温度的差异以及电子温度和密度的径向衰减长度的差异。该模型采用了分界线处电子温度恒定的边界条件，计算了各种SOL参数，并与JT60U、JET和Alcator C Mods的实验结果进行了比较，两者吻合较好。导出了分离等离子体SOL参数的标度关系，并利用该模型对ITER（国际托卡马克实验堆）的SOL参数进行了预测。

项目成果

宮本健郎: "核融合をめざしたプラズマの研究" 日本物理学会誌. 51. 549-556 (1996)

Takeo Miyamoto：“核聚变等离子体的研究”日本物理学会杂志 51. 549-556 (1996)。

K.Miyamoto and N.Asakura: "An Improved Two Points Model of Scrape-off-Layer Plasma of Tokamak with Divertor" J.Plasma and Fusion Research (プラズマ・核融合学会誌. 74 (No.3). 266-273 (1998)

K.Miyamoto 和 N.Asakura：“带有偏滤器的托卡马克刮掉层等离子体的改进两点模型”J.Plasma and Fusion Research（等离子与聚变研究杂志。74（第 3 期）。266-273 (1998)

K.Miyamoto: "Direct Ion Orbit Loss Near The Plasma Edge of A Divertor Tokamak in The Presence of A Radial Electric Field" Nuclear Fusion. 36. 927 (1996)

K.Miyamoto：“在径向电场存在下，偏滤器托卡马克等离子体边缘附近的直接离子轨道损失”核聚变。

K.Miyamoto and N.Asakura: "An Improved Two Points Model of Scrape-Off-Layr Plasma of Tokamak with Divertor" J.Plasma and Fusion Research. 74, no.3. (1998)

K.Miyamoto 和 N.Asakura：“带有偏滤器的托卡马克刮离层等离子体的改进两点模型”J.Plasma and Fusion Research。