He is a research and development engineer in the Experiment Analysis Group of Nuclear Science and Technology at Idaho National Laboratory. In his present position, he leads in-pile instrumentation development for transient irradiation testing and is a principal investigator for transient testing of metallic fuels. He is an experiment safety and performance analyst for experiments at the Advanced Test Reactor and the Transient Reactor Test Facility. In addition, he is a technical lead for measurement of thermophysical properties of nuclear materials. He has expertise in energy transport in condensed matter, liquids, gases, and material interfaces. He has significant experience in advanced measurements of thermophysical properties of nuclear materials using multi-scaled approaches, including nano-scale measurements using atomic force microscopy, laser-based microscopic photothermal methods, and bench-scale high temperature thermal conductivity techniques. He also has expertise in numerical and commercial finite element analysis. He holds bachelor’s and master’s degrees from Utah State University and a joint doctorate from Utah State University and Universite de Reims Champagne-Ardenne. He is a member of American Nuclear Society (ANS) and American Society of Mechanical Engineers. He was the founding president of the ANS Student Chapter at Utah State University and currently serves as an Executive Committee member for the Material Science and Technology Division of ANS.
He is a directorate fellow and department manager at Idaho National Laboratory and dedicated to conducting radiation effects research, leading to the development of radiation tolerant materials, for 25 years. Throughout his career, he has demonstrated a successful multidisciplinary approach, involving extensive experimental investigations, exhaustive post-irradiation microstructural characterization, and theoretical modeling. He has extensive experience using multiple techniques, such as light ions, heavy ions, in-situ ion irradiation/microscopy, and neutron irradiation to conduct research focused on the relationships between radiation damage, material microstructure, and material performance on a broad range of reactor structural materials and nuclear fuels. In addition to this effective multidisciplinary approach, he is a recognized international expert in the nanoscale characterization of irradiated fuels and materials using transmission electron microscopy (TEM) methods. His important contributions include the evaluation of radiation effects in advanced carbide and nitride candidate materials for the Generation IV gas-cooled fast reactor program; characterization of the fission gas superlattice bubbles in irradiated U-Mo fuel; work as a principal investigator on a project that helped scientists to understand the role of irradiated defect development on thermal conductivity degradation in UO2; and evaluation of the radiation stability of advanced oxide dispersion strengthened alloys using ion irradiation that revealed the superior radiation performance of these alloys to high radiation dose. He also leads a team of researchers at Idaho National Laboratory and Brookhaven National Laboratory conducting research under a U.S. Department of Energy Basic Energy Sciences project he initiated on gas bubble self-organization.
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