[en] By means of a novel experimental design named 'Double-Target Coupling', amplifications of five lines at wavelengths of 19.6, 23.2, 23.6, 24.7 and 28.6 nm from the 3p-3s transitions in neon-like germanium plasma have been observed. The germanium slabs were irradiated by two opposing laser beams with the irradiance of 1.2 x 10¹³ W/cm² at line foci in the ∼1ns pulses. The values of GL, the product of gain and plasma length, of the lines at 23.2 and 23.6 nm, were both about 13. Using a soft x-ray streak camera, temporal behaviours of four lines were recorded and studied

[en] The principles and characteristics of point-projection radiography were studied through static imaging experiments, using laser-driven about 4.8 keV Ti plasma X-ray source. The application of point-projection to dynamic diagnosis was then developed, and an experimental platform was accomplished with about 4.8 keV photon energy, about 100 ps time resolution and about 10 μm spatial resolution. A series of experimental results from this platform were introduced, including those on hydrodynamic instability, laser-accelerated plasma jet and compression characters of materials. (authors)

[en] The hole targets in X-ray laser jets experiments were fabricated.Holes were drilled by drill press in Al and CH films by machine and pico-second laser. The hole targets were assembled by precision assemblage and measured by Wyko NT 1100 surface profiler and 2 dimensions coordinate measuring machine. The apertures are fine and the same between face and con-face, and the interface of layers are connected closely and seem clear. (authors)

[en] Short communications only

[en] The experimental results of Al-Cu impedance-match targets, performed on 'Shenguang' facility under the pressures of (0.4-0.8) TPa, is presented. The measured data are closely in accord with that of the extrapolation both from the lower pressure measurement using high-explosive loading facility and the higher pressure measurement under underground nuclear test environment

[en] The principle and major parameters of the X-ray double-slit camera, employed to observe the line-plasmas are described. The experimental results of the line-focused laser irradiation on Ge tragets are also given

[en] The fabrication and measurement of isentropic release targets were described. The Al, Au, Ag , Cu and Zn thin foils were cut to hundred micron by apparatus of laser. They are fabricated to isentropic release targets using in the laser equation of state experiments by the assembly. The parameters of targets were measured by NT1100 profiling system. The isentropic release targets were used in 'SG Ⅱ' experiments and good images were obtained. (authors)

[en] The fabrication of metal film steps used in equation of state experiment targets was investigated. The metal film step of hundreds of microns width was cut by picosecond laser processing technology. The factors of generating heat effect in the processing were analyzed. The processing parameters were as follows: power 0.5 W, pulse width 10 ps, wavelength 355 nm, and scanning speed 100 mm/s. Two metal films of 400 and 120 microns width were obtained in the experiment. The measurement results show that the width of metal film can be precisely controlled and the quality of metal film surface before and after cutting was the same. (authors)

[en] A line velocity interferometer for any reflector has been implemented at the Shenguang-II laser facility. This instrument is the primary diagnostic for a variety of experiments involving laser-driven shock-wave propagation,materials characterization experiments and shock timing experiments. It measures velocities of interfaces, free surfaces and shock fronts traveling through transparent media. It can measure shock breakout time at temporal resolutions as low as 20 ps, and spatial resolution 10 μm. Experiments were carried out on the Shenguang-II laser facility and high quality interference images were obtained. (authors)

[en] On the basis of the three-beam output of basic frequency from 'Shenguang-II' laser facility and beam smoothing technology of lens-array, the shock wave with a better planarity in ranged 650-750 μm the target was created after optimum design and rational combination for laser beam. Then the efficiency of output beams from 'Shenguang-II' laser facility had been raised. And the shock stability experiment with the inclined-plane target indicated that the shock wave steadily propagated in the Al target of thickness of about 28.38-55.82 μm and 22.13-35.07 μm under the power density of 3.26 x 10¹⁴ W/cm² and 3.11 x 10¹⁴ W/cm² respectively