Effect of MHD activities on pressure profile in high-β plasmas of LHD
Effect of MHD activities on pressure profile in high-β plasmas of LHD
复制标题
MHD 活动对 LHD 高β等离子体中压力分布的影响
DOI:
10.1088/0741-3335/44/5a/320
复制
发表时间:
2002
影响因子:
2.2
通讯作者:
O. Kaneko
中科院分区:
文献类型:
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作者:
S. Sakakibara;H. Yamada;K. Watanabe;Y. Narushima;K. Toi;S. Ohdachi;S. Yamamoto;K. Narihara;K. Tanaka;A. Komori;O. Kaneko
Effects of MHD activities on the pressure profile in NBI plasmas in the range of β≤3% have been investigated in Large Helical Device (LHD). The β dependence of the n/m = 1/2 mode in the core region and the ι = 1 resonant modes in the peripheral region are focused. The n/m = 1/2 mode has been observed in the βdia range of less than 2.3% and disappears when the plasma reaches the Mercier stable region. The pressure profile becomes broader with increasing β, and a large pressure gradient forms in the peripheral region. The amplitudes of the ι = 1 resonant modes in the peripheral region increase monotonically with β.
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