Edge impurity dynamics during an edge-localized mode cycle on DIII-D
Edge impurity dynamics during an edge-localized mode cycle on DIII-D
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DIII-D 上边缘局部模式循环期间的边缘杂质动态
DOI：
10.1063/1.1891745
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发表时间：
2005
影响因子：
2.2
通讯作者：
D. Coster
中科院分区：
文献类型：
--
作者：
M. Wade;K. Burrell;J. Hogan;A. Leonard;T. Osborne;P. Snyder;D. Coster
利用高空间和时间分辨率光谱，直接测量边缘局域模式(ELM)循环中的杂质动力学，揭示了ELM事件和ELM间周期的丰富细节。在等离子体条件下，观察到与ELM事件相关的增加的输运以类似的方式影响所有粒子物种(电子、离子和杂质)。密度微扰(以及对流能量损失)对边缘碰撞不敏感，而温度微扰(因此传导能量损失)随着边缘碰撞程度的增加而减小。轮廓对ELM的响应分析表明，ELM的初始响应是边缘高梯度区的杂质密度迅速(~lt；0.5ms)下降，同时温度和旋转速度短暂增加，然后以比初始密度下降略长的时间尺度(∼1ms)下降。交通工具就是OBS..。
Using high spatial and temporal resolution spectroscopy, direct measurements of the impurity dynamics during an edge-localized mode (ELM) cycle have revealed rich details of both the ELM event and the inter-ELM period. The increased transport associated with the ELM event is observed to affect all the particle species (electrons, ions, and impurities) in a similar manner over a wide range in plasma conditions. The density perturbation (and hence convective energy loss) is found to be insensitive to edge collisionality while the temperature perturbation (and hence conductive energy loss) decreases as the edge collisionality increases. Analysis of the response of the profiles to the ELM indicates that the initial response to the ELM is a rapid (<0.5ms) decrease in the impurity density in the high gradient region in the edge coincident with a brief increase in the temperature and rotation velocity, which then drop on a slightly longer time scale (∼1ms) than the initial density decrease. Transport is then obs...
影响因子：
3.3
作者：
N. Oyama;N. Asakura;A. Chankin;T. Oikawa;M. Sugihara;H. Takenaga;K. Itami;Y. Miura;Y. Kamada-Y.-Kamad
通讯作者：
N. Oyama;N. Asakura;A. Chankin;T. Oikawa;M. Sugihara;H. Takenaga;K. Itami;Y. Miura;Y. Kamada-Y.-Kamad