激光驱动材料动态压缩技术

Laser driven dynamic compression of materials

  • 摘要: 激光驱动动态压缩实验是极端高压高密度研究的主要途径,在多个学科领域具有重要意义,包括地球行星科学,材料科学以及惯性约束聚变,有助于认识极端条件下的材料特性并拓展其在各学科的应用。近年来激光驱动压缩技术在激光装置、激光等离子体、制靶和诊断技术的同步提升下取得了突破性的进展,与其他极端条件实验平台相比,其斜波压缩、复杂路径、衰减冲击等新型加载路径得到快速发展,微介观诊断技术和宏观诊断技术相结合,具有明确的超高压、高温、高应变率以及高同步精度等技术特色。从激光驱动材料压缩的热力学路径、激光驱动的机制与特色、激光驱动实验技术、材料极端压缩物理进展等方面介绍激光驱动实验和理论方面的进展。

     

    Abstract: Laser driven dynamic compression experiments play the central role in extreme pressure and density research, and are important to a number of fields, including planetary geophysics, material science, and inertial confinement fusion, benefit to improve understandings of properties of materials at extreme conditions and their applications. Recently laser driven compression techniques have been developing quickly together with laser facility, laser plasma interaction, target fabrication and diagnostic techniques. On contrast to other loading platform, it is good at ramp compression, decaying shock compression and complex loading path, and allows micro-scale probe combined with macro-scale measurements, ultra-high pressure and strain rate. This review summarizes this technique from the aspects of thermodynamics of compression, laser drive mechanism, laser drive experimental techniques and recent advances of extreme compression of materials.

     

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