Preliminary Analysis of Fission-induced Dimensional Changes in Single Crystals of UraniumIrradiations of uranium true single crystals and lineage crystals are described. Analysis of the dimensional and shape changes results in the crystallographic deformation rates. The lineage crystals elongated in the [010] direction at appreciably higher rates than the single crystals. |
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10X Irradiated a/o total burnup accuracy Alpha Uranium Single ANALYSIS OF FISSION-INDUCED Appearance of Crystal Appearance of Lineage Appearance of Uranium Appendix approximately ARGONNE NATIONAL LABORATORY ASSIGNED TO IRRADIATED Burnup of crystals BURNUP VALUES ASSIGNED capsules crystallographic directions left CRYSTALLOGRAPHIC POLES CRYSTALS OF URANIUM cylindrical axis deformation diameter Dimensional Measurements error ranges fiducial marks FISSION-INDUCED DIMENSIONAL CHANGES foil associated G₂ geometric analysis Growth Coefficient growth rate vectors identify X-ray orientation J. H. Kittel KAPL observations KAPL workers lineage crystals Longitudinal Axial Section magnified 10X magnitude Metallurgy minimum growth vectors Natural Uranium neutron Normalized Number orthogonal Paine and J. H. parallelogram Photograms of Uranium photographs plane POLES TO SPECIMEN Postirradiation Appearance pseudo crystals RELATION OF CRYSTALLOGRAPHIC relationship G₁ S. H. Paine shape changes skew angle SUMMARY OF DIMENSIONAL symmetry Table Total Atom Burnup Unirradiated URANIUM by S. H. Uranium Crystals Uranium Single Crystal volume change