Analogous saturation mechanisms of the ion and electron temperature gradient drift wave turbulence.
Analogous saturation mechanisms of the ion and electron temperature gradient drift wave turbulence.
复制标题
离子和电子温度梯度漂移波湍流的类似饱和机制。
DOI：
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发表时间：
2014
影响因子：
8.6
通讯作者：
Amiya K. Sen
中科院分区：
文献类型：
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作者：
Vladimir E. Sokolov;Amiya K. Sen
新的实验结果和理论论证表明，电子温度梯度模式的新颖饱和机制与其与阻尼离子声波模式的耦合有关。实验双相干数据显示了（∼2 MHz）附近电子温度梯度的两个高频径向谐波和一种低频离子声波（∼45 kHz）模式之间的多模耦合。独特的反馈诊断也验证了这种耦合。有人指出，几乎相同的机制导致 ITG 模式饱和 [V. Sokolov 和 A. K. Sen，物理学家。莱特牧师。 92, 165002 (2004)]，表明其似是而非的通用性质。
New experimental results and theoretical arguments indicate that a novel saturation mechanism of the electron temperature gradient modes is related to its coupling to a damped ion acoustic mode. The experimental bicoherence data show multimode coupling between two high frequency radial harmonics of electron temperature gradient in the vicinity of (∼2 MHz) and one low frequency ion acoustic (∼45 kHz) mode. A unique feedback diagnostic also verifies this coupling. It is pointed out that a near identical mechanism is responsible for ITG mode saturation [V. Sokolov, and A. K. Sen, Phys. Rev. Lett. 92, 165002 (2004)], indicating its plausible generic nature.