Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Rev Sci Instrum. 2023 Jan 1;94(1):011101. doi: 10.1063/5.0123439.
Two variants of optical imaging velocimetry, specifically the one-dimensional streaked line-imaging and the two-dimensional time-resolved area-imaging versions of the Velocity Interferometer System for Any Reflector (VISAR), have become important diagnostics in high energy density sciences, including inertial confinement fusion and dynamic compression of condensed matter. Here, we give a brief review of the historical development of these techniques, then describe the current implementations at major high energy density (HED) facilities worldwide, including the OMEGA Laser Facility and the National Ignition Facility. We illustrate the versatility and power of these techniques by reviewing diverse applications of imaging VISARs for gas-gun and laser-driven dynamic compression experiments for materials science, shock physics, condensed matter physics, chemical physics, plasma physics, planetary science and astronomy, as well as a broad range of HED experiments and laser-driven inertial confinement fusion research.
两种变体的光学成像速度测量技术，特别是 Velocity Interferometer System for Any Reflector（VISAR）的一维条纹线成像和二维时间分辨面成像版本，已成为高能密度科学中重要的诊断工具，包括惯性约束聚变和凝聚态物质的动态压缩。在这里，我们简要回顾了这些技术的历史发展，然后描述了当前在世界各大高能密度（HED）设施中的应用，包括 OMEGA 激光设施和国家点火设施。我们通过回顾成像 VISAR 在气体枪和激光驱动动态压缩实验中的各种应用，展示了这些技术的多功能性和强大功能，这些应用涵盖了材料科学、冲击物理学、凝聚态物理学、化学物理学、等离子体物理学、行星科学和天文学，以及广泛的 HED 实验和激光驱动惯性约束聚变研究。
