Plasma and Fusion Research
Volume 13, 3402037 (2018)
Regular Articles
- 1)
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan
- 2)
- SOKENDAI (the Graduate University for Advanced Studies), Toki 509-5292, Japan
Abstract
In order to clarify the mass effect and the atomic number effect on the rotation of the interchange MHD mode, the relationship between the mode rotation and the plasma rotation in hydrogen-rich plasmas is compared with that in helium-rich plasmas and deuterium-rich plasmas. In all cases, the frequency of the m/n = 1/1 resistive interchange mode is almost the same as the sum of the E × B rotational frequency and the electron diamagnetic rotational frequency at the ι/2π = 1 resonant surface. This result indicates that the rotation of the resistive interchange mode does not depend on the ion species of which the plasma consists.
Keywords
MHD instability, interchange mode, mode frequency, plasma rotation, LHD
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