论文标题
微扰动介导的途径，用于在tokamaks中进行活力离子传输和Alfvénic模式间歇性
Microturbulence-mediated route for energetic ion transport and Alfvénic mode intermittency in tokamaks
论文作者
论文摘要
我们报告了Alfvén本特征模（AE）在Tokamak等离子体中诱导的快速离子转运的理论发现，其中微扰动起着快速离子松弛的介体的作用。仅库仑碰撞散射会导致较小的AE幅度，并且不会重现实验中观察到的稳态状态。我们表明，在非线性状态下，由于微扰动性引起的有效螺距散射会导致稳态AE振幅演化。这表明了快速离子损失的一条新途径，这超出了“微扰动性通过微扰动的能量离子传输在Tokamaks中的不重要”的情况” [D. D. C. Pace等人，物理。等离子体20（2013）056108]。结果，在燃烧等离子体实验（例如ITER）的预测模拟中，微刹车可以显着增加AE的幅度。
We report on a theoretical discovery of new regimes of Alfvén eigenmode (AE) induced fast ion transport in tokamak plasmas, where microturbulence plays the role of a mediator of fast ion relaxation. Coulomb collisional scattering alone leads to small AE amplitudes and does not reproduce the steady state regimes observed in experiments. We show that in nonlinear regimes the effective pitch angle scattering due to microturbulence can lead to steady state AE amplitude evolution. This indicates a new route for fast ion losses, which is beyond the scenarios described in "Energetic ion transport by microturbulence is insignificant in tokamaks" [D. C. Pace et al., Phys. Plasmas 20 (2013) 056108]. As a result, microturbulence can significantly increase the amplitude of AEs in predictive simulations of burning plasma experiments such as ITER.
