Adam Parkison Program Manager Contact PARKISONAJ@ORNL.GOV All Publications Materials Characterization Capabilities for the Plutonium-238 Supply Program History of Pu-238 Production Restart Efforts at Idaho National Laboratory and Oak Ridge National Laboratory Insights into Tetravalent Np Speciation in HNO3 through Spectroelectrochemistry and Multivariate Analysis Simultaneous Thermal Analysis of Anion and Cation Exchange Resins Improving understanding of NpO2 and Np2O5 through vibrational spectroscopy Evaluating Optical Techniques to Characterize Solid State Samples for the Pu-238 Supply Program... Quantifying neptunium oxidation states in nitric acid through spectroelectrochemistry and chemometrics