A5036949644- Radioactive element chemistry and processing
- Nuclear Materials and Properties
- Nuclear reactor physics and engineering
- Geochemistry and Elemental Analysis
- Nuclear materials and radiation effects
- Chemical Synthesis and Characterization
- Water Quality and Resources Studies
- Nuclear Physics and Applications
- Radioactive contamination and transfer
- Marine and environmental studies
- Geochemistry and Geologic Mapping
- Radioactivity and Radon Measurements
- Membrane-based Ion Separation Techniques
- Peatlands and Wetlands Ecology
- Nuclear and radioactivity studies
- Mine drainage and remediation techniques
Oak Ridge National Laboratory
2023-2024
Michigan State University
2024
Clemson University
2019-2023
University of Notre Dame
2019
Abstract Curium and promethium share similar chemical physical properties thereby complicating their separation. Co-located processing at Oak Ridge National Laboratory results in curium contamination of the fission product stream containing promethium. To gain insight into difficulty this separation, fundamental these elements are experimentally computationally probed a 2,2’:6’,2”-terpyridine crystal system. Analysis isostructural compounds via single X-ray diffraction quantum theory atoms...
Wetlands have several important roles in the hydrological cycle, including maintaining water quality by removing surface and groundwater contaminants. Over time, wetlands themselves can become contaminated, posing a secondary environmental threat. The objective of this study was to calculate inventory uranium (U) remaining wetland 50 years after Fuel Fabrication Facility on Savannah River Site located South Carolina released 43.5 Mg U into nearby environment. 232 700 gamma spectra their...
Abstract Uranyl phosphate minerals are widespread in uranium deposits and normally exhibit very low solubility aqueous systems. phosphates of the autunite group metaautunite subgroup impact mobility environment have inspired groundwater remediation strategies that emphasize their solubility. The importance soluble uranium-bearing macro-anions, including nanoscale uranyl peroxide cage clusters, is largely unexplored relative to solubilization low-solubility minerals. Eight synthetic analogs...
<title>Abstract</title> Curium (<sup>244</sup>Cm) from the plutonium (<sup>238</sup>Pu) waste stream at Oak Ridge National Laboratory is coextracted with promethium (<sup>147</sup>Pm) because of similar chemical and physical properties. To gain insight for improving this separation, their fundamental properties are experimentally computationally probed in a 2,2’:6’,2”-terpyridine crystal system. Analysis isostructural compounds via single X-ray diffraction quantum theory atoms molecules...
The production of plutonium-238 through irradiation neptunium-237 (237Np) target materials for the use in radioisotope thermoelectric generators is paramount continued deep space exploration. This work employs scanning electron microscopy to analyze 237Np coupled with a well-developed image analysis framework (Morphological Analysis Material Attribution, or MAMA) determine degree micron-scale homogeneity materials. demonstrated how quantification particle characteristics can validate and...
Uranyl phosphate minerals are widespread in uranium deposits and normally exhibit very low solubility aqueous systems. phosphates of the autunite group metaautunite subgroup impact mobility environment have inspired groundwater remediation strategies that emphasize their solubility. The importance soluble uranium-bearing macro-anions, including nanoscale uranyl peroxide cage clusters, is largely unexplored relative to solubilization low-solubility minerals. Eight synthetic analogs been...