Ryan Heldt Nuclear Fuel Coating Engineer Contact HELDTRS@ORNL.GOV All Publications Quantifying particle movement in a spout-fluidized bed with irregular feedstock morphology... Low-Pressure and Fluidized-Bed Chemical Vapor Deposition of PyC and ZrC for Space Nuclear Propulsion Chemical vapor deposition of ZrC coatings for Space Nuclear Propulsion Organizations Fusion and Fission Energy and Science Directorate Nuclear Energy and Fuel Cycle Division Nuclear Fuel Development Section Advanced Fuel Fabrication Group