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.

实验研究了超音速激光产生的等离子体射流与二级气体靶的相互作用。使用多帧干涉测量/阴影成像和 X 射线诊断的组合来表征射流的等离子体参数以及由此产生的冲击，从而可以对其结构和演化进行详细研究。速度是用 x 射线条纹相机获得的，过滤的 x 射线针孔成像用于推断射流和激波的电子温度。发现环境等离子体密度的拓扑结构对射流和激波的形成以及它们的辐射特性有显着影响。将实验结果与辐射流体动力学模拟进行比较，从而进一步深入了解喷流和激波形成和演化的潜在物理过程。