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- W148203784 abstract "The purpose of this work was to perform an experimental simulation of the radiation effects that SYNROC-D (a ceramic waste form and the alternate to borosilicate glass for US defense high-level nuclear waste) will experience during the first million years of storage. Technology was developed for doping SYNROC-D with /sup 238/Pu and performing external gamma irradiation to simulate both actinide and fission product decay. The doping technique was tested using both Ce and U as stand-ins to simulate the +3 and +4 oxidation states of Pu, respectively. Samples were characterized by ceramography, density measurements, x-ray diffraction, scanning electron microscope-energy dispersive x-ray analysis, electron microprobe, scanning transmission electron microscope, gamma ray spectrometry, and leaching; equipment was fabricated for dilatation measurements. An early decision by the Department of Energy (DOE) to select borosilicate glass and terminate SYNROC-D development prevented doping with /sup 238/Pu or external gamma irradiation. However, a sample was doped with /sup 239/Pu in order to study the Pu distribution, and characterization of this sample was completed. Although conclusive proof was not developed, all indications from this work are that Pu will go into the zirconolite and perovskite phases in SYNROC-D, favoring perovskite under the redox conditions prevailing in amore » graphite die. Technology development and results of Ce, U, and /sup 239/Pu doping studies are described in this report.« less" @default.
- W148203784 created "2016-06-24" @default.
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- W148203784 date "1983-05-27" @default.
- W148203784 modified "2023-09-24" @default.
- W148203784 title "Plutonium doping of SYNROC-D" @default.
- W148203784 hasPublicationYear "1983" @default.
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