Magnetic island dynamics in magnetic reconnection in UTST experiments

S. Kamio, M. Inomoto, K. Yamasaki, T. Yamada, C. Z. Cheng, Y. Ono

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Abstract

The dynamics of the magnetic island formed inside the reconnection current layer was investigated under the strong guide field in the UTST spherical tokamak merging experiment. A pair of proximately located O- and X-points was generated at ∼5 cm away from the other X-point. The formed O- and X-points immediately started to move toward the downstream region inside the current layer, but the O-point had larger velocity and caught up the preceding X-point within 0.5 μs. The results from Doppler spectroscopy indicated that the ion flow velocity had the intermediate value between the O- and X-point velocities, suggesting that the ions flowed with approximately the same velocity with the magnetic island.

Original languageEnglish
Article number012126
JournalPhysics of Plasmas
Volume25
Issue number1
DOIs
Publication statusPublished - Jan 1 2018

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Kamio, S., Inomoto, M., Yamasaki, K., Yamada, T., Cheng, C. Z., & Ono, Y. (2018). Magnetic island dynamics in magnetic reconnection in UTST experiments. Physics of Plasmas, 25(1), [012126]. https://doi.org/10.1063/1.5006092