Energetic electrons driving low-frequency magnetohydrodynamic instabilities, e.g., electron fishbone (eFB) modes and electron beta-induced Alfvn eigenmodes (eBAEs), are found in co- and counter-current drive low hybrid current drive (LHCD) plasma in HL-2A, respectively. The eBAEs are found in LHCD plasma for the first time. Two branches eFB modes are observed in the core of plasma, and they can transit from the high-frequency one to the low-frequency one continuously. The different mode structures and positions are obtained by tomography of soft x-ray arrays. The frequency jump phenomena of eFB modes are also found. Two eBAEs, with poloidal and toroidal mode numbers m/n = 3/1 and 5/2, are found in the edge of the plasma. The single m/n = 3/1 mode is found when the LHCD power (P _LHCD) is 0.44 MW. The strong m/n = 5/2 mode coexists with the weak 3/1 mode when P _LHCD = 0.52 MW. Although the current drive direction of LHCD is opposite to the plasma current, the two eBAEs also propagate in the electron diamagnetic drift direction poloidally, which is the same direction as the eFB modes in co-current drive LHCD plasma. With increasing P _LHCD (or changed current profile), the value of the edge safety factor (q) decreases. The evolutions of the mode numbers of eBAEs may be related to changes in the edge q factors.

在HL-2A的并流和逆流驱动低混合电流驱动（LHCD）等离子体中发现了驱动低频磁流体动力学不稳定性的高能电子，例如电子鱼骨（eFB）模式和电子β诱导的Alfvn本征模式（eBAEs）。 ， 分别。首次在LHCD血浆中发现eBAE。在等离子体核心中观察到两个分支eFB模式，它们可以连续地从高频一个过渡到低频一个。通过软X射线阵列的断层摄影术获得不同的模式结构和位置。还发现了eFB模式的跳频现象。在等离子体的边缘发现了两个eBAE，其倍数和环形模数m / n = 3/1和5/2。单m / n当LHCD功率（P _LHCD）为0.44 MW时，发现= 3/1模式。当P _LHCD = 0.52 MW时，强m / n = 5/2模式与弱3/1模式共存。尽管LHCD的电流驱动方向与等离子体电流相反，但是两个eBAE也在电子反磁漂移方向上呈倍数传播，该方向与并流驱动LHCD等离子体中的eFB模式相同。随着P _LHCD的增加（或变化的电流曲线），边缘安全系数（q）的值减小。eBAE的模式数的演变可能与边缘q因子的变化有关。