PRELIMINARY ANALYSIS OF FISSION-INDUCED DIMENSIONAL CHANGES IN SINGLE CRYSTALS OF URANIUM

Irradiations of uranium true single crystals and lineage crystals are described. Analysis of the dimensional and shape changes results in the crystallographic deformation rates: G/sub STA001!/ = -420 plus or minus 20, G/ sub STA010!/ = 420 plus or minus 20, and G/sub STA001!/ = 0 plus or minus , where G is the logarithmic increment divided by the fission ratio. The lineage crystals elongated in the STA010! direction at appreciably higher rates than the single crystals. (auth)