通过国家点火设施的直接驱动冲击计时实验验验证爆破建模的验证
A Srinivasan1, T R Boehly1, M C Marshall1
1University of Rochester, Laboratory for Laser Energetics, Rochester, New York 14623-1299, USA.
Physical review. E
|May 17, 2024
概括
在惯性封闭融合中精确建模冲击波是成功实验的关键. 这项研究验证了国家点火设施 (NIF) 的冲击定时模型,改善了融合能源合预测.
科学领域:
- 等离子体物理学的物理学
- 核聚变能源的使用方式
- 高能量密度物理学 高能量密度物理学
背景情况:
- 对冲击波的准确建模对于惯性封闭融合 (ICF) 爆发至关重要.
- 冲击动态取决于激光能量沉积,热传导和状态方程.
研究的目的:
- 描述国家点火设施 (NIF) 发射多个冲击到内目标的实验.
- 用不同的激光脉冲形状和强度验证冲击定时模型.
主要方法:
- 在NIF进行的实验中,使用聚乙烯内的目标.
- 激光脉冲形状使用了两个或三个标杆和不同的目标强度的激光脉冲.
- 使用任何反射器的速度干涉度系统 (VISAR) 诊断了冲击速度.
主要成果:
- 模拟和推断的冲击速度在研究的强度范围内显示出很好的一致性.
- 直接驱动的冲击定时实验提供了早期激光能量合的可靠测量.
结论:
- 经过验证的模型提高了兆级直接驱动点火设计的可信度.
- 实验结果支持在ICF中精确建模冲击现象.
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