トーラスプラズマ合体を用いた駆動型磁気リコネクションの実験的検証

利用环形等离子体合并驱动磁重联的实验验证

• 批准号: 07044128
• 负责人: KATSURAI Makoto
• 金额: $ 6.34万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044128/
• 关键词: Magnetic Reconnection; Plasma Merging; Spheromak; Driven Reconnection Model; Tokamak; Anomalous Resistivity; Anomalou Ion Heating; FRC; プラウマ合体; 逆転磁場配位

A laboratory experiment of magnetic reconnection has been developed in the TS-3 and TS-4 merging devices, using two colliding plasma toroids with cohelicity and counterhelicity. The conventional local 2-D reconnection was extended experimentally to global 3-D reconnections by introducing a new field component Bx parallel to the X-line, a global external force and a reconnection-driven global equilibrium transition. Selective ion heating accompanied by a 3-D field-aligned jet was documented during the counterhelicity reconnection without Bx, indicating its direct energy-conversion into the ion thermal energy. All of ion heating, current-sheet resistivity and reconnection rate increase significantly with decreasing Bx and with increasing external force, indicating three-component and driven features of reconnection. The anomalous sheet-current dissipation and the ion heating are both found to depend on whether the current-sheet is compressed shorter than the ion gyroradius or not.

磁重联实验室实验已在 TS-3 和 TS-4 合并装置中进行，使用两个具有粘性和反螺旋性的碰撞等离子体环。通过引入平行于 X 线的新场分量 Bx、全局外力和重联驱动的全局平衡转变，将传统的局部 2 维重联实验性地扩展到全局 3 维重联。在没有 Bx 的反螺旋重联过程中记录了伴随 3D 场对准射流的选择性离子加热，表明其直接能量转换为离子热能。随着Bx的减小和外力的增加，离子加热、电流片电阻率和重联率均显着增加，表明重联的三分量和驱动特征。发现异常片电流耗散和离子加热都取决于电流片是否被压缩得短于离子回转半径。

项目成果

M.Yamada, Y.Ono et al.: "Identification of Y-Shaped and O-Shaped Diffusion Region during Magnetic Reconnection in Laboratory Plasma" Physical Review Letters. 78. 3117-3120 (1997)

M.Yamada、Y.Ono 等人：“实验室等离子体磁重联过程中 Y 形和 O 形扩散区域的识别”物理评论快报。

Y.Ono: ""Slow Formation of Field-Reversed Configuration by Use of Two Merging Spheromaks"" Transaction of Fusion Technology. Vol.27. 369-373 (1995)

Y.Ono：“使用两个合并球体缓慢形成场反转结构”《聚变技术汇刊》。

Y.Ono et al.: "Exparimental Investigation of Three-Component Magnetic Reconnection by Use of Merging Spheromaks and Tokamaks" Physics of Plasmas. 4. 1953-1962 (1997)

Y.Ono 等人：“通过使用合并球体和托卡马克进行三分量磁重联的实验研究”等离子体物理学。

Y.Ono et al.: "Exprimental Observation of Direct IOn Heating/Acceleration During Merging formation of FRC" Fusion Energy 1996. 2. 263-273 (1997)

Y.Ono 等人：“FRC 合并形成过程中直接 IOn 加热/加速的实验观察”Fusion Energy 1996. 2. 263-273 (1997)

Y.Ono M.Katsuai et al.: "Experimental Observation of Direct Ion Heating/ Acceleration During Merging Formation of FRC" Plasma Physics and Controlled Nuclear Fusion Research 1996. (掲載予定).

Y.Ono M.Katsuai 等人：“FRC 合并形成过程中直接离子加热/加速的实验观察”等离子体物理和受控核聚变研究 1996 年。（待出版）。