Methods and experiments of applying VISAR to measure particle velocity history at the interface between shocked Cu specimen and LiF window and LiF specimen and LiF window are described, respectively. The peak stress levels were 6.5 GPa and 3.61 GPa. Wedged LiF window was applied to smooth out the effect of the reflected light and parasitical interference from the window rear surface, and as a result the signal-to-noise ratio and the reliability of window VISAR were improved significantly.

An evaluation method was proposed for the design and the life-span of use of blast chamber for break out affair, and the JBG series blast chambers had been designed and built up for resisting 1.0~6.0 kg TNT blast. In order to test the ability of the resistance to blasting, explosion experiment had been done, and the remainded distortions of the shell were measured. According to the method the remainded distortions of the JBG series blast chamber loaded first time by explosion with the allowed maximum explosive mass was calculated and the life-span of use for the shell affected by repeat explosion load was evaluated. The experimental and calculated results of remainded distortion were on the whole the same.

The resistance-pressure and capacitance-pressure relationships for double perovskite compound Sr₂FeMo_xNb_1-xO₆ (x=0, 0.3) have been studied in the pressure range of 0~20 GPa using a diamond anvil cell at room temperature. The experimental results indicate that Sr₂FeNbO₆ undergoes a structural transition at about 7.5 GPa while Sr₂FeMo_0.3Nb_0.7O₆ at about 2.8 GPa. According to the analysis of energy dispersive X-ray diffraction with synchrotron radiation, these are considered as electronic structure transitions caused by high pressure.

The behaviors of dynamic damage and fracture of D6A, 921, 45 steels were studied via symmetric impact experiments. Using the double wave structure of the free-surface velocity profile and the material longitudinal elastic wave speed at room temperature, we obtained the D-u_p Hugoniot relations for the three steels. The Hugoniot elastic limits and spall strengths of the three steels were also obtained. A new simple phenomenal equation for describing the evolution of damage was proposed, with which the experimental spall processes were simulated.

Carbon nitride comprises super physical and chemical properties and abroad applications. Its structure and character were reviewed, and the synthetic methods, including CVD, ion beam sputtering, laser ablation, ion plating and ion irradiation et al., were completely introduced. The perspectives of the investigations of the super-hard carbon nitride were discussed by looking at the new progresses achieved in the corresponding application studies. The experimental results show that crystallites of a little cubic C-N compound dispersed in an amorphous matrix. FTIR spectroscopy showed that the films contain mainly C=C and sp²/sp³ C-C bonds. X-ray diffraction and SEM studies indicate that the deposited films may consist of the nano-sized β-C₃N₄. Crystallites embedded in matrix of graphite form of C₃N₄ structure, and the crystalline phases are high enough to be detected by XRD.

A substitute of polymer bonded explosive called D-90033 was studied by using a SEM equipped with a loading system. Results indicate that the substitute is composed of two main phases, one is of grain structure, and the other lamellar structure. Under uniaxial compression, the damage and failure is caused and principally controlled by the longitudinal crack initiation and propagation along the boundary of two phases.

Preliminary results of an one-dimensional numerical code designed to investigate the magnetic field thrust effects in plasma opening switch are presented. The code is based on the magneto-hydrodynamic equations, and the current into the switch is given as a known condition. The plasma development on the axial direction is calculated. Also plasma density at different moment during the opening process is described. It is pointed out that the Hall effect plays a predominant role in the abnormal penetration of magnetic field.

From the systemically comparative study of previous experimental solid Hugoniot data of different porous samples, a new material parameter β, which keeps in constant along Hugoniot for all kinds of solid materials, was revealed. For different materials, the value of β is different. There exist an universal power relationship between material constant β and initial density ρ₀ for metal. By using this constant β, Hugoniot data between different porous samples can be converted very simply, and Grüneisen parameter can also be obtained very easily. The limitation of this empirical material parameter being as a constant was discussed with variations of pressure and porosity.

A new structure assembly method is proposed to describe the high T_c superconductor materials. Using this method, the main crystalline structures of the high T_c superconductors were derived in the language of infinite layer in Cu-O perovskite. Furthermore, a three digit nomenclature has been adopted to catalog the structures of the high T_c superconductors.

A new spectroscopic technique is introduced to measure the delay time of the shock ignition of epoxypropane. Intermediate product of the most early emergence for the loaded fuel is determined at first using spectrometer, because the intermediate product of O for epoxypropane after shock ignition is always emerged early. Then the monochrometer is adjusted to 436.8 nm (or 395.46 nm, 394.7 nm) wavelength of O, and the arrival time of shock wave is measured by gauge. The delay time of shock ignition for epoxypropane is determined. The delay time determined by the method is closer than that of using photo-electric diode whose peak wavelength is about 800 nm. The measured results show that the emergence times of intermediate product of O for epoxypropane after shock ignition are different, and radiation intensities for the radicals are also different. The emergence times for O, CH₂O, C₂, CH, CH₃O, CO₂, H₂O radicals are obtained after the shock wave enters into the epoxypropane. Oxygen atoms are always presented first.