摘要
在共振磁场扰动(resonant magnetic perturbation,RMP)控制边界局域模(edge localized modes,ELMs)的试验中,在ELMs被缓解的条件下,研究了RMP对电子热输运的影响。结果表明,RMP对等离子体的输运增强集中在边界位置。从电子回旋辐射诊断给出的电子温度中观察到,ELMs的每次爆发均会引起边界电子温度的崩塌且崩塌沿等离子体径向向内传播,传播速度不受RMP影响。通过指数函数拟合方法,对电子温度崩塌后的恢复过程进行分析,得到了恢复特征时间,并用该恢复特征时间近似表征输运特征时间。在RMP投入期间,边界位置处的恢复特征时间变短,电子热输运增强。输运的增强因子沿径向向外增大,在边界处达到3.5。
In the experiment of edge localized modes(ELMs)controlled by resonant magnetic perturbation(RMP),the influence of RMP on electron heat transport was investigated when achieving the mitigation control of ELMs.The result shows that the enhancement of plasma transport by RMP is concentrated at the edge.Then the edge electron temperature was measured by electron cyclotron emission diagnostics.The collapse of the edge electron temperature could be observed when ELMs explodes,and it propagated radially inward along the plasma with its speed out of the influence of RMP.The recovery process after crashes was analyzed through the exponential function fitting method.Thus the recovery characteristic time was obtained and it was used to represent the heat transport characteristic time.During the application of RMP,the recovery characteristic time decreased and the electron heat transport was enhanced at the edge of plasma.The electron heat transport enhancement factor increased radially outward,and it could reach 3.5 at the edge of plasma.
作者
马群
孙有文
钟方川
赵海林
王辉辉
石同辉
MA Qun;SUN Youwen;ZHONG Fangchuan;ZHAO Hailin;WANG Huihui;SHI Tonghui(College of Science,Donghua University,Shanghai 201620,China;Institute of Plasma Physics,Chinese Academy of Science,Hefei 230031,China)
出处
《东华大学学报（自然科学版）》
CAS
北大核心
2020年第3期479-485,共7页
Journal of Donghua University(Natural Science)
基金
国家重点计划资助项目(2017YFE0301104,2017YFE0301100)。
关键词
电子温度崩塌
共振磁场扰动
特征时间
电子热输运
electron temperature crash
resonant magnetic perturbation
characteristic time
electron heat transport
