On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas
On the fluctuation of line radiation emitted during aluminum micro-pellet ablation in magnetized plasmas
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DOI：
10.1088/0741-3335/41/7/303
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发表时间：
1999-07
影响因子：
2.2
通讯作者：
G. Kocsis;J S Bakos;R. Burhenn;B. Kardon;S. Kálvin;L. Ledl;G. Mank;G. Petravich;A. Pospieszczyk;S. Zoletnik
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文献类型：
--
作者：
G. Kocsis;J S Bakos;R. Burhenn;B. Kardon;S. Kálvin;L. Ledl;G. Mank;G. Petravich;A. Pospieszczyk;S. Zoletnik
实验研究了在MT-1 M、TEXTOR-94托卡马克和W7-AS仿星器等离子体中注入铝微丸时，在高温磁化等离子体中观察到的烧蚀条纹现象。研究了小球云形状的变化和总发射线辐射的时间涨落。特别注意的是调查的波动频率对颗粒速度的依赖性。结果表明，光的波动频率的特征是由一个特征时间，而不是由一个特征长度，条纹是由电离小球云的演化过程中发生的一种现象。这些实验观测与不同的理论条纹的兼容性进行了讨论。
The phenomenon of striation observed during pellet ablation in hot magnetized plasma is investigated experimentally injecting aluminum micro-pellets into MT-1M and TEXTOR-94 tokamak and W7-AS stellarator plasmas. Changes in pellet cloud shape and temporal fluctuations of total emitted line radiations are studied. Special attention is paid to the investigation of the dependence of fluctuation frequency on pellet velocity. The results show that the light fluctuation frequency is characterized by a characteristic time rather than by a characteristic length, and that the striation is caused by a phenomenon that occurs during the evolution of the ionized-pellet cloud. The compatibility of these experimental observations with different theories of striation is discussed.