Investigation of microscopic radiation damage in waste forms using ODNMR and AEM techniques. (EMSP Project Final Report)

Liu, G. ; Luo, J. ; Beitz, J. ; Li, S. ; Williams, C. ; Zhorin, V.

Argonne National Laboratory

关键词: Berkelium 249;    Waste Forms;    Lutetium Phosphates;    36 Materials Science;    Radiation Effects;   

DOI  :  10.2172/755843
RP-ID  :  ANL/CHM/RP-102215
RP-ID  :  W-31109-ENG-38
RP-ID  :  755843

美国|英语

来源: UNT Digital Library

【 摘 要 】

This project seeks to understand the microscopic effects of radiation damage in nuclear waste forms. The authors' approach to this challenge encompasses studies of ceramics and glasses containing short-lived alpha- and beta-emitting actinides with electron microscopy, laser and X-ray spectroscopic techniques, and computational modeling and simulations. In order to obtain information on long-term radiation effects on waste forms, much of the effort is to investigate {alpha}-decay induced microscopic damage in 18-year old samples of crystalline yttrium and lutetium orthophosphates that initially contained {approximately} 1(wt)% of the alpha-emitting isotope {sup 244}Cm (18.1 y half life). Studies also are conducted on borosilicate glasses that contain {sup 244}Cm, {sup 241}Am, or {sup 249}Bk, respectively. The authors attempt to gain clear insights into the properties of radiation-induced structure defects and the consequences of collective defect-environment interactions, which are critical factors in assessing the long-term performance of high-level nuclear waste forms.