The role of nonadiabatic electrons in regulating the hydrogenic isotope-mass scaling of gyrokinetic turbulence in tokamak fusion plasmas is assessed in the transition from ion-dominated core transport regimes to electron-dominated edge transport regimes. We propose a new isotope-mass scaling law that describes the electron-to-ion mass-ratio dependence of turbulent ion and electron energy fluxes. The mass-ratio dependence arises from the nonadiabatic response associated with fast electron parallel motion and plays a key role in altering—and in the case of the DIII-D edge, favorably reversing—the naive gyro-Bohm scaling behavior. In the reversed regime hydrogen energy fluxes are larger than deuterium fluxes, which is the opposite of the naive prediction.

中文翻译：

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托卡马克边缘湍流中简单的氢同位素比例定律的逆转。

在从离子控制的核心传输方式向电子控制的边缘传输方式的过渡中，评估了非绝热电子在托卡马克聚变等离子体中调节旋动湍流的氢同位素质量标度中的作用。我们提出了一种新的同位素质量定律，该定律描述了湍流离子和电子能量通量对电子与离子的质量比依赖性。质量比率相关性是由与快速电子平行运动相关的非绝热响应引起的，并且在改变（对于DIII-D边缘的情况下，有利地逆转）幼稚的陀螺-波姆缩放行为起着关键作用。在相反的情况下，氢能通量大于氘通量，这与天真的预测相反。