期刊论文

Ma, Jun(junma@ipp.ac.cn);Guo, Wen-Feng(wfguo@ipp.ac.cn)

英文

中国物理B

1674-1056

2023

32

1

449-454

10.1088/1674-1056/ac70b4

Project supported by the Research Foundation of Education Bureau of Hunan Province, China (Grant No. 21B0648), the National Natural Science Foundation of China (Grant Nos. 11805239, 12075282, and 11775268), and the Natural Science Foundation of Hunan Province, China (Grant No. 2019JJ50011).

本校为第一机构

The linear behavior of the dominant unstable mode (m = 2, n = 1) and its high order harmonics (m = 2n, n ≥ 2) are numerically investigated in a reversed magnetic shear cylindrical plasma with two q = 2 rational surfaces on the basis of the non-reduced magnetohydrodynamics (MHD) equations. The results show that with low beta (beta is defined as the ratio of plasma pressure to magnetic field pressure), the dominant mode is a classical double tearing mode (DTM). However, when the beta is sufficiently large, the mode is driven mainly by plasma pre...