High-resolution monochromatic X-ray imaging techniques applied to Shenguang Ⅱ laser facility

A study of the high resolution monochromatic X-ray imaging techniques based on the spherically curved crystals is reported. The relationships between the key performance parameters and the design parameters of the system were analyzed. A spherically curved quartz crystal with H-like Mg resonance line and a spherically curved mica crystal with the continuous spectrums of Mo at 3.14 keV were used on SGII laser facility. The backlighted images of the capsules were obtained and the spatial resolution of the X-ray optical system was better than 5 m over a larger area. This technique can make numerous critical contributions to the current state of knowledge in inertial confinement fusion research, such as the trajectory of an imploding shell and the hydrodynamic stability.