论文类型：期刊论文

第一作者：Zhuo Huang

通讯作者：Yunfeng Liang,Nengchao Wang

合写作者：Qiming Hu,Da Li

发表刊物：Nuclear Fusion

收录刊物：SCI

卷号：60

期号：6

页面范围：064003

关键字：magnetohydrodynamics, magnetic reconnection, tearing instability, tokamaks

DOI码：10.1088/1741-4326/ab8859

发表时间：2020-05-19

影响因子：3.706

摘要：The field penetration threshold of magnetic perturbations has been observed to vary non-monotonically with an increase of density in ohmic plasmas on the J-TEXT tokamak. This observation appears contradicting the previous empirical density scaling law. Disentanglement of plasma density and rotation dependences of the field penetration threshold has been carried out. It shows that the field penetration threshold depends only weakly on the density but linearly on the plasma rotation. This result is not only important for the prediction of error field tolerance in fusion devices, but also opens a question on the role of density in the forced magnetic reconnection process in magnetized plasmas.