2017 年 27 巻 2 号 p. 129-136
Laser-driven dynamic compression is used to study matters in extreme conditions. Warm Dense Matter (WDM) conditions, approximately defined at a solid density and temperatures between 0.1 and 10 eV, are created in materials under the laser-shock compression, of great current interest for high-energy density physics, planetary sciences, and inertial fusion energy research. At the WDM conditions, the micro-structure of material significantly influences the behavior and properties of material. X-ray free electron laser (XFEL) is a powerful tool to directly observe a structure and to reveal the time scale of the structural change under the dynamic high pressures. Here we present recent results of WDM experiments associated with strong shock equation of state and ultrafast observation of lattice dynamics.
