Magnetic island dynamics in magnetic reconnection in UTST experiments

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

doi:10.1063/1.5006092

Magnetic island dynamics in magnetic reconnection in UTST experiments

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

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

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 language	English
Article number	012126
Journal	Physics of Plasmas
Volume	25
Issue number	1
DOIs	https://doi.org/10.1063/1.5006092
Publication status	Published - 2018 Jan 1

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.5006092

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title = "Magnetic island dynamics in magnetic reconnection in UTST experiments",

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.",

author = "S. Kamio and M. Inomoto and K. Yamasaki and T. Yamada and Cheng, {C. Z.} and Y. Ono",

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T1 - Magnetic island dynamics in magnetic reconnection in UTST experiments

AU - Kamio, S.

AU - Inomoto, M.

AU - Yamasaki, K.

AU - Yamada, T.

AU - Cheng, C. Z.

AU - Ono, Y.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - 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.

AB - 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.

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Magnetic island dynamics in magnetic reconnection in UTST experiments

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