论文标题
在激光 - 血浆实验中对超音速喷气机和冲击的辐射表征
Radiative characterization of supersonic jets and shocks in a laser-plasma experiment
论文作者
论文摘要
实验研究了超音速激光生成的等离子体喷气机与次级气体靶的相互作用。使用多帧干涉仪/阴影图和X射线诊断的组合对喷射的等离子体参数以及产生的冲击进行了表征，从而详细研究了它们的结构和进化。使用X射线条纹摄像头获得速度，并使用过滤后的X射线针孔成像来推断射流的电子温度和冲击。发现环境等离子体密度的拓扑对射流和冲击形成以及它们的辐射特性具有显着影响。将实验结果与辐射流体动力学模拟进行了比较，从而提供了进一步的见解，对射流的潜在物理过程以及冲击形成和进化。
The interaction of supersonic laser-generated plasma jets with a secondary gas target was studied experimentally. The plasma parameters of the jet, and the resulting shock, were characterized using a combination of multi-frame interferometry/shadowgraphy, and X-ray diagnostics, allowing for a detailed study of their structure and evolution. The velocity was obtained with an X-ray streak camera, and filtered X-ray pinhole imaging was used to infer the electron temperature of the jet and shock. The topology of the ambient plasma density was found to have a significant effect on the jet and shock formation, as well as on their radiation characteristics. The experimental results were compared with radiation hydrodynamic simulations, thereby providing further insights into the underlying physical processes of the jet and shock formation and evolution.
