Spatially resolving light elements with high resolution chemical analysis for waste forms characterization
EMSL Project ID
49683
Abstract
The primary goal of this user proposal is to gain access to the unique instruments at EMSL that we need to identify and spatially resolve light elements such as Li and B in the presence of other surrogate radionuclides in a variety of waste forms. Three such techniques for doing this are electron probe microanalysis with wavelength dispersive spectroscopy (EPMA-WDS), nano-resolution secondary ion mass spectrometry (nano-SIMS), and atom probe tomography (APT). Additionally, Li-containing crystalline phases can be spatially mapped with electron backscatter diffraction (EBSD). Proof-of-concept experiments on PNNL-made specimens with these instruments have proven useful and further experimentation is needed to fully evaluate the techniques for our applications.
Project Details
Start Date
2016-11-23
End Date
2017-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Lee K., B.J. Riley, H. Park, J. Choi, S. Han, J. Hur, and J.A. Peterson, et al. 2019. "Investigation of physical and chemical properties for upgraded SAP (SiO2-Al2O3-P2O5) waste form to immobilize radioactive waste salt." Journal of Nuclear Materials 515, no. 2019:382-391. PNNL-SA-130870. doi:10.1016/j.jnucmat.2019.01.004