An investigation of the Ni+ion in irradiated LiF and NaF

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Abstract
It is generally recognized that there are significant differences in the geometry of folded chain molecules from sector to sector in diamond shaped polyethylene single crystals. Single crystals of this type were deformed on a Mylar substrate in order to determine the effect of changes in fold geometry on the operative deformation processes. A marked dependence of the operation of stress induced slip, twinning and martensitic transformation with fold geometry was observed. The differences in the deformation behaviour of adjacent fold sectors could be explained simply in terms of the orientation of the molecular folds with respect to the tensile axis.