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首页> 外文期刊>Nuclear fusion >CHANGE OF NEUTRAL ENERGY DISTRIBUTION AT L-H, H-L TRANSITIONS AND ELM IN THE JFT-2M TOKAMAK
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CHANGE OF NEUTRAL ENERGY DISTRIBUTION AT L-H, H-L TRANSITIONS AND ELM IN THE JFT-2M TOKAMAK

机译：JFT-2M托卡马克中L-H，H-L跃迁和ELM的中性能量分布的变化

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摘要

The analyses of the neutral energy distribution measured by the time of flight (TOF) method in the JAERI Fusion Torus 2M (JFT-2M) tokamak are summarized. The TOF technique is also reviewed. Rapid changes of the neutral energy distribution at L-H, H-L transitions, edge localized mode (ELM) and sawtooth crash are observed and these occur earlier than the change of H_α intensity. This means that the ion energy distribution changes and is playing a very important role at L-H, H-L transitions and ELM. The change of the energy distribution is observed as an increase or decrease of the high energy outflux above an energy of 200 eV. An energy of greater than 200 eV for hydrogen corresponds to the collisionless condition v_*i < 1 just inside the separatrix. The observations during an L-H transition from a sawtooth crash to a fall in the Ho intensity are discussed sequentially.
机译：总结了在JAERI Fusion Torus 2M（JFT-2M）托卡马克中通过飞行时间（TOF）方法测量的中性能量分布的分析。 TOF技术也进行了回顾。观察到在L-H，H-L跃迁，边缘局部模式（ELM）和锯齿形碰撞时中性能量分布的快速变化，这些变化比H_α强度的变化更早发生。这意味着离子能量分布会发生变化，并在L-H，H-L跃迁和ELM中起非常重要的作用。观察到能量分布的变化是高于200 eV能量的高能量流出量的增加或减少。氢的大于200 eV的能量对应于分离层内部的无碰撞条件v_ * i <1。依次讨论了从锯齿形碰撞到Ho强度下降的L-H过渡过程中的观察结果。

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