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一个近X点电荷交换中性光谱 (CENS) 系统用于DIII-D

S R Haskey¹, C Chrystal², A Angulo¹

¹Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543, USA.

The Review of scientific instruments

|September 5, 2024

概括

在DIII-D上,一个新的16通道光谱系统使用Balmer-α发射中的多普勒位移来测量原子中性能量分布. 这提供了详细的见解中性粒子在等离子体内的行为.

科学领域:

等离子体物理学的物理学
频谱学是一种光谱学.
融合能源研究融合能源研究

背景情况:

了解原子中性的行为对于受限等离子体分析至关重要.
以前使用光学过器的方法在详细测量方面存在局限性.
DIII-D托卡马克需要用于等离子体燃料和运输研究的先进诊断.

研究的目的:

在DIII-D.上安装和使用16通道光谱系统.
通过多普勒转移和Balmer-α发射的扩展来测量原子中性的能量分布.
为了获得对影响中性从下方转移器到受限等离子体的原子物理过程的见解.

主要方法:

在DIII-D托卡马克上安装一个16通道光谱系统.
使用被动的Balmer-α发射线的视线主要在 toroidal 方向.
分析多普勒转移和光谱线的扩展,以确定中性能量和速度分布.

主要成果:

该系统提供关于中性能量分布的详细信息.
带光谱分辨率的测量比光学波器方法具有优势.
能够直接测量为更深的等离子体区域提供燃料的中性粒子,并捕获速度分布.

结论:

该光谱系统有效地测量了DIII-D中的中性粒子特性.
热和冷辐射的光谱分离简化了中性密度计算.
这种诊断增强了对等离子体中性相互作用和燃料动态的理解.

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