Abstract

AbstractThe effect of the poloidal flow on the magnetic island is studied. The self‐healing of the magnetic island has been observed in the Large Helical Device (LHD) and TJ‐II. In TJ‐II plasmas, the magnetic island is healed in case the radial electric field is positive. In the LHD experiment, on the other hand, the radial electric field is negative when the magnetic island is healed. The relation between the magnitudes of the E×B flow and ion diamagnetic flow is important to consider the effect of the poloidal flow on magnetic island (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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