Experimental observation of multi-scale interactions among kink/tearing modes and high-frequency fluctuations in the HL-2A core NBI plasmas
Experimental observation of multi-scale interactions among kink/tearing modes and high-frequency fluctuations in the HL-2A core NBI plasmas
复制标题
HL-2A核心NBI等离子体中扭结/撕裂模式与高频波动之间多尺度相互作用的实验观察
DOI：
10.1088/1741-4326/aa7eee
复制
发表时间：
2017-11-01
期刊：
影响因子：
3.3
通讯作者：
Duan, X. R.
中科院分区：
文献类型：
--
作者：
Chen, W.;Jiang, M.;Duan, X. R.
Multi-scale interactions have been observed recently in the HL-2A core NBI plasmas, including the synchronous coupling between m/n = 1/1 kink mode and m/n = 2/1 tearing mode, nonlinear couplings of TAE/BAE and m/n = 2/1 TM near q = 2 surface, AITG/KBM/BAE and m/n = 1/1 kink mode near q = 1 surface, and between m/n = 1/1 kink mode and high-frequency turbulence. Experimental results suggest that several couplings can exist simultaneously, Alfvenic fluctuations have an important contribution to the high-frequency turbulence spectra, and the couplings reveal the electromagnetic character. Multi-scale interactions via the nonlinear modulation process maybe enhance plasma transport and trigger sawtooth-crash onset.
