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Neutral recycling effects on ITG turbulence

D.P. Stotler, J. Lang, C.S. Chang, R.M. Churchill, S. Ku2017年被引用 29Nuclear FusionIF 3出版社

The effects of recycled neutral atoms on tokamak ion temperature gradient (ITG) driven turbulence have been investigated in a steep edge pedestal, magnetic separatrix configuration, with the full-f edge gryokinetic code XGC1. An adiabatic electron model has been used; hence, the impacts of neutral particles and turbulence on the density gradient are not considered, nor are electromagnetic turbulence effects. The neutral atoms enhance the ITG turbulence, first, by increasing the ion temperature gradient in the pedestal via the cooling effects of charge exchange and, second, by a relative reduction in the shearing rate.

日本語訳

リサイクルされた中性原子がトカマクのイオン温度勾配(ITG)駆動乱流に及ぼす影響が、急峻なエッジペデスタル、磁気セパラトリクス配位において、full-fエッジジャイロ運動論コードXGC1を用いて調査された。断熱電子モデルが使用されている。したがって、中性粒子と乱流が密度勾配に及ぼす影響は考慮されておらず、電磁乱流効果も考慮されていない。中性原子はITG乱流を増強するが、その第一の要因は、電荷交換の冷却効果によるペデスタル内のイオン温度勾配の増大であり、第二の要因は、せん断速度の相対的な低減である。

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