Spontaneous Formation of Plasmoid during Early Magnetic Reconnection Phase of Two Merging Tokamaks
Spontaneous Formation of Plasmoid during Early Magnetic Reconnection Phase of Two Merging Tokamaks
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两个合并托卡马克早期磁重联阶段等离子体团的自发形成
DOI：
10.1002/tee.23208
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发表时间：
2020
影响因子：
1
通讯作者：
Ono Yasushi
中科院分区：
文献类型：
--
作者：
Cao Qinghong;Cai Yunhan;Akimitsu Moe;Xiang Junguang;Ahmadi Tara;Tanaka Haruaki;Tanabe Hiroshi;Ono Yasushi
我们在 TS-6 上的环形等离子体合并实验中使用新开发的高分辨率磁探针阵列观察到一种新型等离子体团的自发形成，该阵列具有轴向陀螺尺度空间分辨率（ΔZ1.1 cm）。在轴向拉长的新机器中，当最初的两个通量管（合并托卡马克）仍处于各自的形成区域时，在磁重联的早期阶段，等离子体团在中平面附近形成，具有两个X点的配置。然后等离子体团在两个X点处与主要上游等离子体合并，最终触发重连接速度的增加。 © 2020 日本电气工程师协会。由 Wiley 期刊有限责任公司出版。
A new type of spontaneous formation of plasmoid is observed in our toroidal plasma merging experiment on TS‐6 using a newly developed high‐resolution magnetic probe array, which has axially gyro‐scale spatial resolution (ΔZ1.1 cm). In the axially elongated new machine, the plasmoid is formed near the mid‐plane with a configuration of two X‐points in the early phase of magnetic reconnection when the initial two flux tubes (merging tokamaks) are still in their respective formation region. The plasmoid is then merged with the major upstream plasmas at the two X‐points, which finally triggers the increment of reconnection speed. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.