Resolvability experiments of shock ignition implemented on Shenguang Ⅲ prototype laser facility

As a novel ignition method, shock ignition has many advantages comparing to fast ignition. The resolvability experiments of shock ignition in China implemented on the Shenguang Ⅲ prototype laser facility is put forward in the paper. Based on the shaping ability of the laser pulse of the facility, a shock laser pulse and a square-topped laser pulse are employed as the drive source. This paper introduces the design of the targets and beam smoothing ability of the laser. The main configurations and measurement precision of two typical diagnostic equipment-the back scattering light diagnostic system and imaging VISAR, are also expounded. The main purpose of the experiment focuses on the laser plasma interaction and the generation and transmitting of the shock wave in the CH polymer layer. Experimental results with the energy and spectrum of back scattering light prove that the fraction of back scattering light has risen and mainly been generated in the wider density region of the plasma after using the shock laser pulse. The simulations and experiment results of the main transmitting progress of the shock wave in CH layer agree well with each other.