期刊论文

Huang, Qianhong;Gong, X. Y.

英文

PHYSICS OF PLASMAS

1070-664X

2017

24

10

102519

10.1063/1.4986117

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11375085]; Major State Basic Research Development Program of ChinaNational Basic Research Program of China [2014GB108002]; Construct Program of Fusion and Plasma Physics Innovation Team in Hunan Province [NHXTD03]; Hunan Province Education Office [17B224]; Construct Program of the Key Discipline in Hunan Province

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The coupling of the short wavelength ion temperature gradient mode (SWITG) and trapped electron mode (SWTEM) in the presence of impurity ions is numerically studied in tokamak plasmas. It is found that the coupling of SWITG and SWTEM modes is divided into hybrid and coexistent cases. The impurity ions always have stabilizing effects on the hybrid mode (namely, SWTE-ITG) with small ηi (ηi < 0.5), which is different from the conventional TE-ITG mode. In the lager ηi (ηi > 0.5) regime, the impurity ions with the density profiles peaked inwardl...