Metamorphosis: Phases of UF{sub 6}
- Department of Energy, Oak Ridge, TN (United States)
A 15-minute videotape is presented. The subject matter is 150 grams of UF{sub 6} sealed in a glass tube. Close-up views show the UF{sub 6} as phase changes are effected by the addition or removal of heat from the closed system. The solid-to-liquid transition is shown as heat is added, both slowly and rapidly. The solid phases which result from freezing and from desublimation are contrasted. In the solid state, uranium hexafluoride is a nearly-white, dense crystalline solid. The appearance of this solid depends on whether it is formed by freezing from the liquid or by desublimation from the vapor phase. If frozen from the liquid, the solid particles take the form of irregularly shaped coarse grains, while the solid product of desublimation tends to be a rather formless mass without individually distinguishable particles. The changes in state are presented in terms of the UF{sub 6} phase diagram.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- OSTI ID:
- 139641
- Report Number(s):
- CONF-9110117--; ON: DE92005283
- Country of Publication:
- United States
- Language:
- English
Similar Records
UF{sub 6} pressure excursions during cylinder heating
Freezer-sublimer for gaseous diffusion plant. [Enrichment of UF/sub 6/]