在短脉冲激光设备上测量从质子加热的热密物质中产生的异位的平台
S Jiang1, A M Saunders1, M P Hill1
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
The Review of scientific instruments
|September 12, 2025
概括
这项研究提出了一个新的实验平台来测量物质释放的度. 该方法使用激光加热样品和X射线对其进行成像,从而使状态方程模型进行比较.
科学领域:
- 高能量密度物理学 高能量密度物理学
- 在极端条件下的材料科学.
- 激光驱动的实验实验.
背景情况:
- 了解极端条件下的材料行为对于各种科学和技术应用至关重要.
- 在高压和高温下精确测量材料的状态方程 (EOS) 仍然是一个重大挑战.
研究的目的:
- 开发和验证一个实验平台,用于测量材料的释放位.
- 为了使实验数据与理论状态方程模型的直接比较.
主要方法:
- 开发一个实验平台,利用短脉冲激光产生的质子进行同位体加热.
- 采用长脉冲激光产生的X射线用于线条式X射线放射,以诊断密度配置文件.
- 整合密度配置文件来推导压力密度是entropes,独立于先前的EOS知识.
主要成果:
- 通过在OMEGA-EP设施上的原则证明实验来证明平台的可行性.
- 使用辐射水力学代码分析合成放射图,以了解异能提取灵敏度.
- 在放射数据中确定了降噪和高空间分辨率的关键要求.
结论:
- 开发的平台能够表征物质释放的物质质量.
- 需要进一步提高精度,才能有效地区分各种状态方程模型.
- 这种方法为推进在极端条件下实验性地确定材料特性提供了一条途径.
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