Spectroscopic Investigation of the Ablation Cloud of Aluminum Pellets Injected in LHD
Spectroscopic Investigation of the Ablation Cloud of Aluminum Pellets Injected in LHD
复制标题
LHD 中注入铝丸烧蚀云的光谱研究
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
R. Stamm
中科院分区：
文献类型：
--
作者：
M. Koubiti;M. Goto;S. Morita;R. Stamm
为了在大型螺旋装置LHD中获得高离子温度的等离子体，注入了由不同材料（如铝和钛）制成的小球。使用光谱测量的线发射的铝离子在不同的电离阶段，消融云的弹丸的特征在于假设的能级满足局部热力学平衡（LTE）的人口密度。除了对组成弹丸云的等离子体的电子温度和密度的估计外，Al +的某些激发能级偏离了LTE假设。可以解释这种偏差的许多原因已经被审查。
In order to obtain plasmas with high-ion temperatures in the Large Helical Device LHD, pellets made of different materials like aluminum and titanium are injected. Using spectroscopic measurements of lines emitted by aluminum ions at different ionization stages, the ablation cloud of the pellet is characterized assuming that the population densities of the energy levels satisfy Local Thermodynamic Equilibrium (LTE). Besides the estimation of the electron temperature and density of the plasma composing the pellet cloud, some excited level of Al + deviate from the LTE assumption. Many reasons which may explain such deviations have been examined.