Equation of state experiments using laser-driven shocks at Shenguang facility

Summary form only given, as follows. With the folding target and double-step target, the propagating characters of shock wave directly driven by inclined-incident laser were studied on Shenguang-II high power laser facility. The results indicated that the shock wave in target still propagates along with the vertical direction of target´s surface. Also the same result was verified indirectly by another experiment based on the measurement for spatial intensity distribution of X-ray radiated from jet plasmas. Using the three-beams of basic frequency from Shenguang-II and beam smoothing technology of lens-array, the shock wave with a better planarity in the target was created after optimum design and rational combination for laser beam, the region of shock planarity is about (650-750) /spl mu/m the shock wave with a better planarity in the target which was heated by the thermal radiation from a laser-healed cavity ( D-shaped and T-shaped) was also obtained. Moreover, equation of state points on the principal Hugoniot of Cu at multimegabar pressure were measured by both directly and indirectly driven, and compared with data from other methods. And the dynamic characters of a flyer were investigated experimental for the first time by a special flyer-inclined target.