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Birefringence measurements in calcite and sapphire under shock compression

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Highly anisotropic single crystals demonstrate many unusual and unique material properties. Under dynamic compression many materials show non-linear behaviour, and separating the effect of anisotropy and the effect of non-linearity is an ongoing challenge in the field. The measurement of birefringence allows a semi-quantitative measure of anisotropy, indicating whether a material has deformed in line with linear elastic equations, has become isotropic, or a non linear anisotropic model is needed.

This talk is part of the Surfaces, Microstructure and Fracture Group series.

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