Experimental research on high-pressure loading technology of multiple thermodynamic paths on 10 kJ-level laser facility

In order to carry out scientific research on the properties of materials under extremely high pressure conditions, a series of laser-driven high pressure loading technology based on Hügoniot, quasi-isentropic compression and “shock+quasi-isentropic” composite thermodynamic path compression have been developed on 10 kJ-level laser facility. The practical high-pressure loading design method has been established and optimization research on planarity, cleanness of compression wave has been performed. High-pressure state generation capability in wide parameter area which covers from above 10¹¹ Pa of quasi-isentropic compression to above 10¹² Pa of Hügoniot compression has been implemented, which provides an important technical foundation for the study of the high-pressure state equation and phase transition dynamics on the laser device.