Observation of Low Frequency Ion Mode Turbulence in Tokamak Plasma
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WANG Gui-ding,
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LIU Wan-dong,
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YU Chang-xuan,
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WEN Yi-zhi,
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WANG Chao,
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PAN Ge-sheng,
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ZHUANG Ge,
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ZHAI Kan,
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XU Yu-hong,
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WANG Cheng,
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WAN Shu-de
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Abstract
Features of a low frequency ion mode were observed together with the electron drift wave type fluctuations by a Langmuir probe array in the bulk plasma inside the velocity shear layer in the KT-5C tokamak. The measured ion mode wavenumber, scaling of the ion mode with chord-averaged density, and the estimated ηi value suggest that the observed ion mode may be the theoretically predicted ηi mode driven by ion temperature gradient.
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