The slowing-down mechanism of the locked-mode-like instabilities with and without an island structure is investigated through the effects of an external RMP (resonant magnetic perturbation) on the instabilities. For both instabilities, the slowing-down duration decreases with the increase in the external RMP, and the RMP dependence is consistent with the braking model of the j B force due to the interaction between the instabilities and the external RMP. Moreover, the relationship between the amplitude and the frequency of both locked-mode-like instabilities during the slowing down is consistent with the force balance model between the j B force due to the external RMP and a viscous force. These results suggest that the slowing down of both locked-mode-like instabilities with finite external RMP occurs due to the j B force driven by the external RMP.

通过外部RMP（共振磁扰动）对不稳定性的影响，研究了具有和不具有岛状结构的锁模状不稳定性的减速机制。对于这两种不稳定性，减速持续时间随外部RMP的增加而减小，并且由于不稳定性和外部RMP之间的相互作用，RMP依赖性与j B力的制动模型一致。此外，减速过程中两种锁定模式不稳定性的振幅和频率之间的关系与j B之间的力平衡模型一致。外部RMP产生的力和粘性力。这些结果表明，由于外部RMP驱动的j B力的作用，有限的外部RMP会使两种类似锁模的不稳定性变慢。