6 papers
Xe gas bubble re-solution in U-10Mo nuclear fuel
ATM Jahid Hasan, Linu Malakkal, Mathew Swisher +1
The U.S. High-Performance Research Reactor program aims to convert high-power research reactors from highly enriched uranium to low-enriched uranium using a monolithic U-10Mo fuel…
Machine learning interatomic potential for predicting the thermal properties of uranium nitride
Beihan Chen, Zilong Hua, Jennifer K. Watkins +4
We present a combined computational and experimental investigation of the thermal properties of uranium nitride (UN), focusing on the development of a machine learning interatomic…
Lattice anharmonicity effects in fluorite oxide single crystals and anomalous increase in phonon lifetime in ceria at elevated temperature
Amey Khanolkar, Saqeeb Adnan, Md Minaruzzaman +6
We investigate the temperature dependence of the frequency and linewidth of the triply-degenerate T zone-centered optical phonon in flux-grown ceria and hydrothermally-synth…
Engineering Phonons in Compositionally Complex Carbide Ceramics
Linu Malakkal, Jarin C French, Lanh Trinh +6
In the pursuit of advanced ceramic materials with exceptional irradiation-resistance and high-temperature tolerance for nuclear applications, compositionally complex carbides (CCCs…
Xenon-metal pair formation in UO2 investigated using DFT+U
Linu Malakkal, Shuxiang Zhou, Himani Mishra +4
A recent experimental study on a spent uranium dioxide (UO2) fuel sample from Belgium Reactor 3 (BR3) identified a unique pair structure formed by the noble metal phase (NMP) and f…
Experimental Confirmation of First-Principles Thermal Conductivity in Zirconium-Doped ThO
Ella Kartika Pek, Zilong Hua, Amey Khanolkar +7
The degradation of thermal conductivity in advanced nuclear fuels due to the accumulation of fission products and irradiation-induced defects is inevitable, and must be considered…