An analytical isentropic compression model for condensed matter is reported, which can provide explicit solutions for isentropic compression fields. To demonstrate this model, a laser-direct-driven ramp compression experiment is performed using an 8-ns, 740-J temporally shaped laser, achieving a peak pressure of 425 GPa in solid aluminum, which value exceeds all previous experimental results. The primary application suggests that this model can function as an important prototype for ramp compression experiments, and the temporally shaped laser direct-driven ramp compression technique can form a practical method to achieve isentropic compression.
A Kirkpatrick-Baez (KB) x-ray microscope has been developed for the diagnostics of inertial confinement fusion (ICF).
The KB microscope system works around 2.5keV with the magnification of 20. It consists of two spherical multilayer
mirrors. The grazing angle is 3.575° at 2.5keV. The influence of the slope error of optical components and the alignment
errors is simulated by SHADOW software. The mechanical structure which can perform fine tuning is designed.
Experiment result with Manson x-ray source shows that the spatial resolution of the system is about 3-4μm over a field
of view of 200μm.