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作者:X.R. Duan , W. Chen ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:The oscillations of poloidal plasma flows induced by radially sheared zonal flows are investigated by newly developed correlation Doppler reflectometers in the HL-2A tokamak. The non-disturbing diagnostic allows one to routinely measure the rotation velocity of turbulence, and he...
作者:X.R. Duan , Yong Liu
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:Self-organized criticality (SOC) dynamics have been investigated in non-local transport regimes induced by the supersonic molecular beam injection in the HL-2A tokamak. Experimental evidence shows that the SOC or avalanche behaviors, such as the Hurst parameter, self-similarity a...
作者:... Q.W. Yang , X.R. Duan , the HL-2A Team
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:Characteristics of fast-ion losses induced by various magnetohydrodynamic (MHD) instabilities, such as tearing mode (TM), long-lived mode (LLM), and sawtooth crash, have been observed and experimentally investigated in the HL-2A tokamak. To study fast-ion losses, a new scintillat...
作者:... Q.W. Yang , X.R. Duan , HL-2A Team
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (3)IOP
摘要:Recent experimental results that are associated with the core-localized (i.e. normalized radius ) Alfvénic modes in HL-2A neutral beam injection (NBI) plasmas with weak magnetic shears are reported. In the different plasma parameter regions, the energetic ions produced by th...
作者:X.R. Duan , X.Q. Xu ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (12)IOP
摘要:The controllability of the heat load and impurity in the divertor is very important, which could be one of the critical problems to be solved in order to ensure the success for a steady state tokamak. HL-2M has the advantage of the poloidal field (PF) coils placed inside the demo...
作者:X.R. Duan , Yong Liu
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (12)IOP
摘要:Edge localized mode (ELM) is successfully mitigated by helium and deuterium supersonic molecular beam injections (SMBIs) on HL-2A. During the ELM mitigation by SMBIs, gradients of ion temperature ( T i) and electron density are softened in the pedestal. It has bee...
作者:... Y.H. Xu , X.R. Duan , HL-2A Team
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (3)IOP
摘要:Strong resonant and non-resonant internal kink modes (abbreviated as RKs and NRKs, respectively), which are also called resonant and non-resonant fishbones, are observed on HL-2A tokamak with high-power ECRH + ECCD (or ECRH) and ECRH + ECCD+, respectiv...
作者:X.R. Duan , Y. Liu ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (4)IOP
摘要:Coexisting dual kinetic geodesic acoustic modes (KGAMs) with similar characteristics have been observed with Langmuir probe arrays in the edge plasma of HL-2A tokamak with low density Ohmic discharge. The dual KGAMs are named a low-frequency GAM (LFGAM) and a high-frequency GAM (...
作者:X.R. Duan , G.Y. Zheng ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (5)IOP
摘要:Study of the hot-plasma vertical displacement event (VDE) in advanced divertor configurations is of significant importance for ITER and for future fusion reactors. The newly designed, medium-sized copper-conductor machine HL-2M has the capability of generating the second X-point ...
作者:... X.T. Ding , X.R. Duan , HL-2A team
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (7)IOP
摘要:New mesoscale electric fluctuations (MSEFs) are identified in the edge plasmas of the HL-2A tokamak using multiple Langmuir probe arrays. The MSEFs, resulting from the synchronization and having components of dominant geodesic acoustic mode (GAM) and m / n = 6/2 potential fluctua...

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