Microscopic Observation of the Shock-Compressed State of LiF by Flash X-Ray Diffraction
In traditional shock wave studies there has been a lack of understanding of the disruptive forces within a shock-front and the effect of shock wave passage on the crystalline order. For example, in the study on the equations of state of solids, volume and pressure under shock-compression are estimated by the Rankin-Hugoniot relations based on the assumption that materials behave as completely relaxed fluids above the yield point. The strength of a material can often be neglected and in early experiments usually was. Johnson and co-workers found by a flash x-ray diffraction (FXD) technique that single crystals of LiF, aluminum, and graphite could transform into the hydrostatically-compressed state essentially as single crystals, and that crystal orientation was preserved .
KeywordsBoron Nitride Crystal Orientation Unit Cell Volume Interplanar Spacing Crystal Axis
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