A5046437659- Radioactive element chemistry and processing
- Graphite, nuclear technology, radiation studies
- Nuclear Materials and Properties
- Nuclear materials and radiation effects
- Thermal and Kinetic Analysis
- Nuclear reactor physics and engineering
- Risk and Safety Analysis
- Chemical Synthesis and Characterization
- Nuclear and radioactivity studies
- Nuclear Physics and Applications
- Molten salt chemistry and electrochemical processes
- Metal Extraction and Bioleaching
- Covalent Organic Framework Applications
- Concrete and Cement Materials Research
- Chemical Safety and Risk Management
- Extraction and Separation Processes
- Fusion materials and technologies
- Radioactive contamination and transfer
- Radiation Detection and Scintillator Technologies
- thermodynamics and calorimetric analyses
- Cassava research and cyanide
- Groundwater flow and contamination studies
- Grouting, Rheology, and Soil Mechanics
- Iron and Steelmaking Processes
- Thermochemical Biomass Conversion Processes
Pacific Northwest National Laboratory
2008-2021
Richland College
2020
Battelle
2005-2017
University of Wisconsin–Madison
2015
Sandia National Laboratories
2009
United States Department of Commerce
1999-2008
Office of Scientific and Technical Information
2000-2008
National Technical Information Service
2000-2007
Atomic Weapons Establishment
2004
Trios Health
1979
Single-pass β ow-through (SPFT) experiments were conducted on a set of non-radioactive Ti-based ceramics at 90 °C and pH = 2 to 12. The specimens contained 27.9 35.8 wt%CeO2 as surrogate for UO2 PuO2. Compositions formulated TiO2-saturated pyrochlore (CeP1) pyrochlorerich baseline (CePB1) ceramic waste forms. Pyrochlore + Hf-rutile perovskite constituted the major phases in CeP1 CePB1 ceramics, respectively. Results from dissolution between 12 indicate shallow pH-dependence with an...
A triple-containment magic-angle spinning rotor insert system has been developed and a sample handling procedure formulated for safely analyzing highly radioactive solids by high-resolution solid-state NMR. The protocol containment have demonstrated (MAS) experiments on ceramic samples containing 5–10 wt % Pu239 Pu238 at rotation speeds of 3500 Hz. technique used to demonstrate that MAS NMR can be measure amorphous atomic number fractions produced accelerated internal radiation damage. This...
Solid NpO2 has been contacted by gaseous NF3 under isothermal conditions at 450°C, 475°C, and 500°C; the resulting reactions have monitored using thermogravimetric analysis. In each case, least two sequential are clearly observed. The first reaction is fluorination of to NpF4 second oxidation NpF6. Careful observation experimental curves reveals evidence several physical chemical mechanisms occurring sequentially times simultaneously. As such, a mathematical modeling approach utilizing...
Production of the important 99mTc medical isotope parent, molybdenum-99 (99Mo), via fissioning high- and low-enriched uranium (HEU/LEU) targets followed by target dissolution in acid solution-phase purification 99Mo is time-consuming, generates quantities corrosive radioactive waste, can result release an array radionuclides to atmosphere. An alternative method has been devised that potential alleviate many these issues. Herein, we demonstrate feasibility a rapid Mo/Tc gas-phase separation...
The molten-salt-cooled nuclear reactor is one of the Generation IV types. One challenges implementing this purifying and maintaining purity various molten fluoride salts that will be used as coolants. method for Oak Ridge National Laboratory's salt experimental test was to treat coolant with a mixture H2 HF at 600 °C. In Article, we evaluate thermal NF3 treatment candidates based on nitrogen trifluoride's (1) past use purify salts; (2) other industrial uses; (3) commercial availability; (4)...