Based on the cluster multiple labeling technique,a novel cluster detection algorithm is presented as an analysis subroutine in two-and three-dimensional molecular dynamic simulations of ejecta that take place as a planar shock wave encounters a free metal surface.The algorithm is described,tested,and used to detect cluster distribution of ejecta from copper and aluminum under a shock loading.The information obtained about the size,distribution,evolution of the cluster is helpful in the understanding of ejection.

In this paper We calculated numerically the electron energy deposition in the cylindrical Ar/Kr/F₂ mixtures Pumped transversely by electron-beam, using SANDYL code, Obtained the relations between energy deposition efficiency and total Pressure of the mixture, electron energy and mixture Composition ratio. Moreover, We made rough estimation of the energy deposition efficiencies of electron and proton by using the formula of the stopping power, and made the comparison of electron and Proton energy losses for the theorical simulation of Proton-beam Pumping.

We have obtained an equation of state at ok by use of the relation between the differential expression and an empirical interpalation expression of the Gruneisen coefficient.We have calculated Hugoniot curves for pb,w,Mo,Fe,Al, the results are in satisfactory agreement with experiments (up to about 5 TPa).The cold pressures abtained are in good agreement with those from From-Mayer potential and improved Morse potential in the range 1≤ρ/ρ_o ≤ 1.5.The two integrals used in calculating cold pressure and cold energy are tabularted

This Paper Presents an approximate method of calculating the ianization degrees, and then an analytic expression of the equation of state for high temperature gases is derived, which can be applied directly to the fluid dynamics calculations. The expression is simple and Its results are fairly accurate.