Roger Kapsimalis Senior R&D Staff and Group Leader, Process and Materials Characterization Group Contact 865.341.4994 | KAPSIMALISRJ@ORNL.GOV All Publications Determining Cooling Time to Improve Burnup Estimation for Characterizing Reactor Operations CURIES: Compendium of uranium Raman and infrared experimental spectra Pressure-induced evolution of the lattice dynamics for selected UO3 polymorphs Product specific thermal degradation kinetics of bisphenol F epoxy in inert and oxidative atmospheres using evolved gas analysis–mass spectrometry Optical Vibrational Spectra and Proposed Crystal Structure of ε-UO3 Computational investigations of Dienes defect- and vacancy-induced changes in the electronic and vibrational properties of carbon fiber structural units Insights into secondary ion formation during dynamic SIMS analysis: Evidence from sputtering of laboratory synthesized uranium compounds with a high-energy O− primary beam on a NanoSIMS 50L Quantitative analysis of Raman spectral parameters for carbon fibers: practical considerations and connection to mechanical properties Reviewing computational studies of defect formation and behaviors in carbon fiber structural units Influence of Temperature on Accessible Pyrolysis Pathways of Homopolymerized Bisphenol A/F Epoxies and Copolymers Structural, Spectroscopic, and Kinetic Insight into the Heating Rate Dependence of Studtite and Metastudtite Dehydration A preliminary investigation into the use of molecular oxide and hydride secondary ion relationships for improvement of the 236U/238U determination on a NanoSIMS 50L Computationally Guided Investigation of the Optical Spectra of Pure β-UO3 MECHANICAL CLASSIFICATION OF CARBON FIBERS FROM RAMAN AND X-RAY SCATTERING The Impact of Coordination Environment on the Thermodynamic Stability of Uranium Oxides A NanoSIMS 50 L Investigation into Improving the Precision and Accuracy of the 235U/238U Ratio Determination by Using the Molecular 235U16O and 238U16O Secondary Ions Shining a light on amorphous U2O7: A computational approach to understanding amorphous uranium materials Characterizing the Chemical Behavior of Uranium Compounds for Nuclear Forensics A GENERALIZED METHOD FOR CHARACTERIZATION OF 235U AND 239PU CONTENT USING SHORT-LIVED FISSION PRODUCT GAMMA SPECTROSCOPY... A GENERALIZED METHOD FOR FISSILE MASS CHARACTERIZATION USING SHORT-LIVED FISSION PRODUCT GAMMA MEASUREMENTS... The simultaneous determination of 235U and 239Pu using delayed neutron activation analysis... The simultaneous determination of 235U and 239Pu using delayed neutron activation analysis Key Links Organizations National Security Sciences Directorate Nuclear Nonproliferation Division
