Abstract
Atomic Xenon one of the fission products of uranium nitride (UN) and uranium dioxide (UO2) in nuclear reactors, diffuses as a gas. We investigated defect formation and xenon mobility in the fuel by using first-principles calculations as implemented in the VASP code. Frenkel defects in uranium were more difficult to find than Frenkel defects in anions and Schottky defects in the UN and the UO2 fuels. Our calculations of the formation energies of extrinsic defects showed that the vacancy formation energies of anions were higher than the vacancy formation energy of the uranium. When xenon diffused in the UN and the UO2 fuels, it preferred sites of vacancy clusters to single vacancies. This means that xenon in Schottky defects site is difficult to remove.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
