基于强激光加载的温稠密物质温度诊断实验研究

温稠密物质是当前高能量密度物理研究中最具挑战性的研究对象之一，在惯性约束聚变与天体物理等领域提出了许多期待解决的问题，其温度效应研究具有跨学科、多尺度的特点，探索温度诊断技术具有重要基础研究意义与应用价值。本项目提出了利用神光高功率大能量激光与高Z材料作用所产生的近Plank辐射场和千电子伏硬X光为驱动源，通过与固体靶相互作用产生极端状态下的中低Z温稠密物质。通过发展探针激光反射率测量与X射线吸收光谱两种实验技术，结合理论模型开展温度效应研究，建立温度诊断方法，并获得温稠密物质在冲击加热与等容加热下的能量传导特性与原子结构特性的变化规律。本研究将有助于提高人们对温稠密物质在极端状态下物理规律的认识，为相关物理模型的建立打下实验基础，推动相关研究领域的发展。

Warm dense matter (WDM) is an extremely challenging area in the research field of high energy density physics (HEDP), and a series of questions were promoted in the research fields such as inertial fusion science and astrophysics. The temperature effect research has the characteristics of interdiscipline and multi-dimension, and the related temperature diagnostics is significative. The present project will adopt near plank radiation and keV X-rays, which are generated by the interaction of Shenguang high power laser with high Z material, to heat solid target to generate low and moderate-Z WDM. The reflectivity and X-ray absorption spectroscopy are used to study WDM temperature effect and develop temperature diagnostic technique. The evolution of transport properties and atom structure during the shock wave and isochoric heating will be studied. This work will improve the understanding of WDM under extreme state, lay the foundation of theoretical model, and promote the development of related fields.