在HSX恒星探测器上的光学半透明等离子体中测量和建模电子旋转子辐射
G M Weir1,2, L Singh2, K M Likin2
1Max Planck Institute for Plasma Physics, EURATOM Association, Wendelsteinstr. 1, 17491 Greifswald, Germany.
The Review of scientific instruments
|July 15, 2025
概括
在螺旋对称实验 (HSX) 上进行的电子旋转子辐射 (ECE) 测量显示了温度变化. 模拟天线图案对于准确的电子温度诊断至关重要,特别是对于非热电子群体.
科学领域:
- 等离子体物理学的物理学
- 核聚变能源研究研究
- 频谱学是一种光谱学.
背景情况:
- 电子循环电子发射 (ECE) 是测量聚变等离子体中的电子温度的关键诊断.
- 螺旋对称实验 (HSX) 使用ECE研究等离子体特性.
- 准确的ECE测量需要仔细考虑仪器效应,如天线图案.
研究的目的:
- 在HSX上校准和验证ECE放射仪诊断.
- 调查天线图案对ECE测量的影响.
- 分析HSX等离子体中的电子温度概况和马克斯韦尔分布的偏差.
主要方法:
- 使用一个16通道的异构接收器进行ECE测量.
- 使用宽带频率源校准了ECE射线计.
- 采用单通道和多通道光线跟踪,使用TRAVIS代码进行建模.
- 将ECE数据与森散射测量结果进行比较.
主要成果:
- 在高等离子体密度 (热等离子体) 时,ECE放射仪测量结果与森散射有很好的一致性.
- 从马克斯韦尔分布和不对称的辐射温度概况显著偏差被观察到低等离子体密度.
- 模拟天线图案对于准确的ECE辐射温度谱重建至关重要.
结论:
- 在HSX上的EEC诊断,当适当校准和建模时,提供可靠的电子温度测量.
- 非热电子群体显著影响ECE测量,导致观察到的不对称性.
- 了解这些影响对于像HSX这样的设备中精确的血表征至关重要.
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