空间分辨率离子温度诊断的建模,用于惯性封闭核聚变
C R Danly1,2, N Birge1, V Geppert-Kleinrath1
1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
The Review of scientific instruments
|December 11, 2023
概括
现在,一个新的诊断系统在惯性封闭融合 (ICF) 爆炸中测量空间分辨率的离子温度. 这一突破克服了以前方法的局限性,改善了对ICF实验中燃料污染的理解.
科学领域:
- 核聚变科学 核聚变科学
- 等离子体物理学的物理学
- 诊断仪器仪器仪表 诊断仪器仪表
背景情况:
- 激光驱动惯性封闭融合 (ICF) 的性能受到压缩过程中三 (DT) 燃料中高Z物质污染的阻碍.
- 模拟表明,离子温度分布可以描述这种燃料混合物,但目前的诊断只提供空间集成测量.
- 现有的中子飞行时间 (nTOF) 诊断缺乏空间分辨率,无法绘制ICF爆发中的离子温度变化.
研究的目的:
- 开发和验证一种新的诊断成像系统,用于测量ICF爆发中的空间分辨率离子温度.
- 为了克服当前诊断的局限性,该诊断只提供空间集成的离子温度数据.
- 为了在ICF实验中更准确地描述燃料污染.
主要方法:
- 结合中子成像和中子飞行时间 (nTOF) 诊断技术.
- 开发了一个详细的前模型,包括中子成像重建,辐射水力学,蒙特卡洛模拟和光学射线跟踪.
- 在OMEGA激光装置上实施了新型诊断系统,以测量沿一个空间维度的离子温度.
主要成果:
- 成功开发了一种新型诊断系统,能够测量ICF冲击中的空间分辨离子温度.
- 前进模型准确地预测了源和成像系统的行为,与实验数据保持一致.
- 完成的诊断系统收集了OMEGA激光器的数据,证明了当前产量水平的可行性.
结论:
- 开发的诊断系统代表了ICF诊断的重大进步,首次实现了空间分辨率的离子温度测量.
- 这项新功能将增强对燃料等离子体混合物及其对ICF性能影响的理解.
- 收集的实验数据的进一步分析正在进行中,预计将为ICF物理提供更深入的见解.
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